Ubuntu Black Screen After Boot


Later, I upgraded to Ubuntu 16. I am going to explain especially how to prevent the black screen after installing the latest NVIDIA Driver. Ubuntu boot hangs with black screen after GRUB July 15, 2012 / 0 Comments / in Linux/FreeBSD / by Stefan Helander It might actually not be hanged, but instead but you might have been kicked into an initramfs shell but it is not displaying on the screen. Recently I upgraded a few servers from Ubuntu 16. I rebooted from USB and because of distraction I forgot all about changing the boot cheatcode options. -> black screen after installation and restart. Changing boot options Permanently for an Existing Installation. Many people find it way too hard sometimes to enter long commands or search forums to find the way they can solve it. because this avoids you from facing a lot of problems such as. A common class of kernel or video driver bug is a blank or black screen on boot. If that works, then you'll need to do a reinstall of Ubuntu. When I try to start my laptop by pressing the power button, it first shows the hp logo on a black background for a while, then ‘Preparing automatic repair’ appears for a bit on the screen, before it goes black. Hello, I'm trying to run Ubuntu inside Virtualbox on my laptop but as soon as I do so, it reaches GRUB and after selecting the OS to start I end up with a static cursor without any following prompt in the top left corner of a black screen. –> black screen after installation and restart. Ask Question Asked 6 years, 5 months ago. Black screen after GRUB. Another long story short - I installed Ubuntu 14. Cause The master boot record (MBR), partition tables, boot sector, or NTLDR file is corrupted. * Remove 'quiet splash' from GRUB_CMDLINE_LINUX_DEFAULT="quiet splash", i. Ubuntu works without any errors. * Open Ubuntu in upstart mode. Sometimes you boot up a VM in Skytap and, after the VMware logo and the Windows logo display, the screen goes black. In GRUB menu you can press 'e', then insert your boot options. With a live cd I entered to the "Try ubuntu without installing" option and check out the log/boot and this appears. Now when I attempt to access the box, I get a screen that looks like everything is loading properly and then a blank screen with a blinking cursor sans prompt in the top left corner of a black screen. I was waiting for more than hour but found no rescue other than restarting machine (for other OS). So it happened that after the upgrade I was hoping to check out some of the new features in Intrepid, as soon as I logged in, Ubuntu just froze up, just a black screen with a mouse pointer that I could move but could not use. Black screen with blinking underscore after Ubuntu installation but once i did i got this black screen with a white blinking underscore on the top left Do you have the option to boot into. However, I ran into a strange issue that the system will always boot into black screen immediately after…. Yesterday I have got latest UBUNTU CD from mail. Net - Duration: 19:11. On most Red Hat and CentOS distributions you can find Linux screen in /usr/bin/screen. But I'm completely locked out after boot with nothing but a black screen and no keyboard access. * Open '/etc/default/grub' in your favourite text editor with 'sudo' permission. Boot Loader Phase. My desktop: Asus ROG-G20. black screen after starting windows screen. Upon restart, after GRUB, boot got stuck on a purple screen before the Ubuntu logo/login. I tried CTRL+ALT+F1~F7, nothing happended. So this is not a big deal or a risk. I have recently upgraded my Dell laptop from Ubuntu 16. I tried to boot in recovery mode, however same situation. I'm trying to install Ubuntu 12. 10 black screen solution. Black screen with errors after Ubuntu live USB was unplugged (510-15IKB) ‎04-02-2017 12:14 PM - edited ‎04-02-2017 01:15 PM As described in the title, I was using a live Ubuntu USB (I already have Ubuntu installed) to use GParted. access the xp partition. Black Screen/No Boot after Ubuntu 16. The live cd is used to try and test linux mint. Some Windows 10 devices may boot to a black screen when they are started for the first time after installing the latest updates for the systems. I installed Ubuntu 11. The most profound is what some have called the "Black Screen of Death". Running VBox on Windows 7 Pro with Ubuntu client. Hit 'enter' key once it reaches GRUB 3. -> black screen after installation and restart. I am running Ubuntu 12. And after this, I don't even get to login screen, the screen just shuts down. 04 screen is done "loading", I get a black screen, with no command lines. Unable to boot Windows 7 after unistalling Ubuntu Dual boot After deleting the partition on which Ubuntu was installed and enlarging the windows partition to fill the old space at the same time( stupid I know), I am unable to boot to Windows 7. Some of these updates required a restart. 04 Black Screen Startup Problem, Ubuntu Black Screen , Ubuntu 10. Laptop users: Fix available for the black screen on unlock bug August 28, 2014 — News — 14. Computer boots to black screen with blinking cursor can mean many different things. After a GRUB2 screen and several minutes, got nice gui with boot-repair screen saying Scanning systems (mount) This may require several minutes followed by progress bar, but that progress bar seemed frozen at about 40%. I have and Acer Aspire 4741G notebook, Nvidia Geforce GT M240 GPU with Windows10 O. Black Screen After install CUDA 10. Xubuntu 18. When I try to turn on the pc with the power button, it makes the whirring sound but the screen is black and it doesn't turn on. After Ubuntu is installed on a system the user should make the appropriate graphics mode entries in the Grub 2 configuration files. A boot loader stored in the first sector of a hard disk, the Master Boot Record, or MBR. Black screen on boot after installation installed Ubuntu which I'm planning to stick with now, but if I thought there was a solid solution for Freya I might try. 04 LTS to the latest version of 18. 04), you will need to make some changes to make it boot safely without running into the black screen issues. 10 black screen solution. 16-generic), and latest VBox 5. Cause The master boot record (MBR), partition tables, boot sector, or NTLDR file is corrupted. Any help would be much appreciated. After pressing enter screen again goes black. I think there’s something wrong with display drivers. 04 but I am having trouble booting it after the first boot (it booted and worked fine when I just installed it). In the end, I have to reset 4 times the MBP to be able to boot on OSX. Additional info: Had a similar issue with Ubuntu, but I would hit my 'brightness' key on the laptop keyboard and the screen would gradually come up (as if the brightness were set all the way down to black). I have an all-in-one C355 that has been having a serious issue lately. Changing boot options Permanently for an Existing Installation. I dont know what went wrong. Black screen with Lenovo logo and spinner. Ubuntu won’t boot. Net - Duration: 19:11. Using the Driver from CUDA 10. It came time for a reboot to which i was prompted to unlock the encryption. 04 via the terminal command do-release-upgrade -d The upgrade completed with a few errors but I did not explicitly note them before reboot, unfortunately. I am unable to ctrl+alt+del and I have tried letting it sit for countless hours. Now reset does nothing, even after reinstalling from the store (!) it just gives a black screen. No article or tutorial could help me, the. Now it happened the second time: After a Ubuntu Linux system crash I had to reboot my Macbook Air and, instead of seeing GRUB, a black screen with a lonely blinking cursor illuminated my face. 04 installation. If Ubuntu is not working properly, there is a simple fix you can attempt using the terminal. 10 If you experienced problems with logging into your session after suspending your laptop by closing the lid (and only this exact scenario!), your days of worry should be over now. A common class of kernel or video driver bug is a blank or black screen on boot. This happens only in Debian 7. In some laptops after installation of ubuntu it gives blank screen at boot time(or at login screen). Symptoms: The screen becomes 100% blank (no backlight or indication that the LEDs or CRT phosphors are lit up), or black (the monitor is on and displaying video, it's just 100% pure black), at some point between the BIOS screen and the login page (GDM) being displayed. Nothing does anything-- I've tried to just wait it out, since typing does nothing (doesn't even print anything on the screen), so I have no. (These steps are designed for Ubuntu users, but in general can be applied to other Linux operating. -> black screen after installation and restart. Then rebooted with that usb stuck in a usb port. I do not have the discs for Windows 7 and I have never done a back-up to my computer on. I cross checked the md5 hash from Ubuntu mate's website, so my download was not corrupted. I was waiting for more than hour but found no rescue other than restarting machine (for other OS). 04 LTS or upgraded from previous version of an Ubuntu then you might face issue of black login screen on startup. Dell has offered allready 2 Bios Updates, after updating it starts nicely in morning and last's about week and then every morning the same problem. GRUB can also boot Windows for you, so you’ll still be able to boot into Windows after you install GRUB. This has happened to many users on several occasions so we thought we would take a quick look at a somewhat common installation. I can get to Kali boot menu and select to boot from usb. My Setup have UEFI, but not have Secure Boot. My card is Zotac Geforce GT630 4Gb. 04 with sudo apt-get update && sudo apt-get upgrade. 10 alternate (text install) because I knew that I had to configure the graphics after the installation or my pc would have problems booting the live CD. 10 If you experienced problems with logging into your session after suspending your laptop by closing the lid (and only this exact scenario!), your days of worry should be over now. I wanted to remove Ubuntu and, following suggestions online, I eliminated Ubuntu partitions. Black screen on boot after installation installed Ubuntu which I'm planning to stick with now, but if I thought there was a solid solution for Freya I might try. All went fine at the start. 04 and Linux Mint 18 (although I had Nvidia issues with Mint) Not sure why. When you restart a Microsoft Windows x86-based computer, the computer stops with an empty, black screen immediately after the power-on self test (POST) is completed. Black screen after logo with blinking underscore, nothing is working Before any bashing lectures, yes ive searched google for days on this issue and no fix or shortcut key is working. -> black screen after installation and restart. If you use Wubi, press SHIFT immediately after selecting Ubuntu. However, I ran into a strange issue that the system will always boot into black screen immediately after…. Hi ! I have a problem with the new Kali 2. I deleted Ubuntu, FORMATED ALL DRIVE, devided partitions, reinstalled Windows but it is still not better. VGA capable of 1024×768 screen resolution. https://youtu. Minimal BASH-like line editing is supported. Ubuntu also shows a brief purple screen, where I can escape and either try it or install it. There was an issue couple of months ago where the OS will drop to (initramfs) which I fixed with a command that I found in the ubuntu forum. Now click on F10 to boot into Ubuntu. Secure boot off; fast boot & hibernation off. 04 in G751JT I tried following the steps and when I try to boot, I always get a black screen even if I added the "nomodeset. If you happen to have a different video card to test with, that would be the fastest part to replace to start with. com/roelvandepaar With thanks & praise. 04 LTS to the latest version of 18. if you're now able to boot to the login screen, shut down your PC and start reconnecting your external peripherals to see if the problem has cleared. For like 20 seconds the screen stays off and then it displays a black screen with only my mouse pointer on it. Some of you might have been hit by a bug in the upgrade that stops system boot with a Kernal panic. My laptop came pre-installed with Windows 8, and I am trying to install Ubuntu 12. No Unity launcher, no top. Rebooting the guest and restarting installation solved the problem. Let’s see how. The PC beeps correctly on startup. Sadly, as reliable as Linux is in general, and as popular as Ubuntu is in particular, sometimes it runs into problems, just like Windows 10 or macOS. If that works, then you'll need to do a reinstall of Ubuntu. 04 with duo 1080Ti. Next thing I had a black screen on boot. After replacing the "quiet splash" code with "nomodeset" in the Ubuntu kernel boot parameters, press the Enter key to boot instantly. This event can also occur on a fresh installation or when updates are installed. 04 to Ubuntu 18. Until last week, I have not been able to get it running on my computer. Rebooting is similarly confused. I wanted to remove Ubuntu and, following suggestions online, I eliminated Ubuntu partitions. Some of these updates required a restart. Each reboot just boots Win10 as normal. Thus, your current system has some components which are unusable or glitched. I do agree with all the others here, that your system is hooped. Whenever I boot up from the LiveCD, it will load up a black screen and remain there. No Unity launcher, no top. I have the blackscreen issue. com/roelvandepaar With thanks & praise. 10 black screen after upgrade. Changing boot options Temporarily for an Existing Installation. Ubuntu (/ ʊ ˈ b ʊ n t uː / uu-BUUN-too) is a free and open-source Linux distribution based on Debian. 10 now boots to black screen after installing updates So I recently installed Ubuntu 18. Any help would be appreciated! RX580 - Black screen on initial boot after install Thread. Computer boots to black screen with blinking cursor can mean many different things. black-screen-what-options-do-i-have-to-fix-it My Udoo has no issues with Ubuntu so it has no use to blaim. Enabling the "nomodeset" feature on the Ubuntu live disk should be enough to get the Ubuntu live USB to boot. Then I have to turn it off to get another 5 to 15 minutes of use. I had ever got “No Input Signal” displayed on screen after boot up from fresh Ubuntu installation, but it was certain that system started and booted into blank screen because the log-in sound would play. 50+ videos Play all Mix - Ubuntu black screen at boot after update (GNU GRUB setting) YouTube Programming in Visual Basic. How to Fix Ubuntu 10. 10 and you get a black/blank screen after you login, or if you change your resolution and you get a black screen, then try this: If you haven’t already tried logging into FailSafe Gnome, click options in the bottom left, then Session, then select Failsafe Gnome. You will also be shown how to boot into Ubuntu. Start up your machine 2. This has happened to many users on several occasions so we thought we would take a quick look at a somewhat common installation. Its a dell studio from 2008, hard drive is only a year or 2 old. 4 LTS in express mode. I'm able to create new VMs and attach my existing VDIs without much issue for Windows instances. After CUDA 10. Ubuntu (/ ʊ ˈ b ʊ n t uː / uu-BUUN-too) is a free and open-source Linux distribution based on Debian. Anyway, i had a same problem as you, i could installed every distro, like ubuntu/manjaro/debian, but i cannot boot into it. Even using "video=vesa:off vga=normal" in the grub at boot by typing "e", I got black screen once or 2, but trying again I ended up getting into the graphical interface. I was greeted by a black screen. If that works, then you'll need to do a reinstall of Ubuntu. I shut down, but when I returned from work this happened. 10 no problem. By videoing the screen, I was able to get this:. Xubuntu 18. when i log into windows 7 screen is black. The screen is completely black. Installation went fine. The 'working light' on the USB stick did not flash anymore, indicating that nothing was happening. After having changed the boot order to have the USB stick first, I got the GRUB2 menu. If I change the grub menu configuration such that Windows will boot if I don't select anything, I see a black screen indefinitely. Ask Question Asked 6 years, 5 months ago. A black screen after installation is the most issue at all. So I booted the live Ubuntu again. This guide shows how to create a UEFI bootable Ubuntu USB drive with persistence using Windows. 04 via the terminal command do-release-upgrade -d The upgrade completed with a few errors but I did not explicitly note them before reboot, unfortunately. replace GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" with. I tried CTRL+ALT+F1~F7, nothing happended. Changing boot options Permanently for an Existing Installation. You boot in to Ubuntu 14. same with all of them. It is very important that you do that. The upgrade went fine, no errors. For the first word, TAB lists possible command completions. Rebooting the guest and restarting installation solved the problem. They show a black screen, then when I hit , they show a black screen with an underscore (cursor, but it's not flashing) in the upper left corner. Tried the following solution, still blank screen. I was able to go into Safe Mode and disable the display adapter which then let me restart and boot up normally (no black screen, although the resolution is not good). I've tried the USB stick on other (older) computers and it works fine. When I reboot the VM after the update, the login screen is normal, but after loading the GUI, any new window gives a black screen (with dashes and lines in some cases). Boot Loader Phase. However after the installation, I tried to boot Ubuntu. Booting up a Dell XPS 13 9350, and the laptop screen goes blank after the logo appears. A black screen after selecting the Try Ubuntu/Fedora/MX and several other distros. The screen goes plain black and stucked there, no GUI/terminal can be accessed. it worked for me. I tried the Driver 418. Stuck on the black screen. I tried to boot in recovery mode, however same situation. Picking "Try Ubuntu" I get a black screen immediately after. Upon boot, there is a black screen with no back light, the splash screen is missing, and if I boot through to Windows 10 the screen remains off. iBasskung. Reporting: Can't install Ubuntu, black screen. After the install, we attempted to reboot into the installed partition, however it goes to the GRUB menu, and once we select the installation for Linux Mint it just goes to a black screen with nothing on it, we've waited over 10 minutes with no changes to the screen. Secure boot off; fast boot & hibernation off. How To Fix Blinking Cursor And Black Screen After UbuntuUbuntu Boots To Black Screen With Blinking CursorBlack Screen Problem While Installing Ubuntu In VirtualboxHow To Fix Blinking Cursor And Black Screen After UbuntuBlinking Cursor On Boot Unique Windows 10 Booting StuckUbuntu Boot Hangs With Black Screen And Blinking CursorKali Linux Black Screen Blinking CursorBlinking Cursor. 10 black screen after boot screen Today I got a update notification to upgrade to 11. After you have put the BeageBone Black Ubuntu Flasher image on a micro SD card, insert it into the powered-off BBB. Tried every combination with secure boot and UEFI boot, every flag and MBR/GPT partition table. Welcome to LinuxQuestions. To see if screen is in your path, you can use the which command: [[email protected] ~]# which screen /usr/bin/screen If you do not have screen, then you can install it easily from an RPM or the package file for your system. Windows 2008 Black Screen On Boot Vmware. Kek4dayz said the Windows 10 black screen. This usually happens because you have an Nvidia or AMD graphics card, or a laptop with Optimus or switchable/hybrid graphics, and Ubuntu does not have the proprietary drivers installed to allow it to work with these. handoff=7" in grub. Now I boot up and the screen flashes from the "ubuntu black" color to pure black, back to the "ubuntu black" color where it remains forever. Unable to boot Windows 7 after unistalling Ubuntu Dual boot After deleting the partition on which Ubuntu was installed and enlarging the windows partition to fill the old space at the same time( stupid I know), I am unable to boot to Windows 7. Now click on F10 to boot into Ubuntu. https://youtu. Using the Driver from CUDA 10. Before getting started, let’s take a look at what’s new in Nvidia 331. New to Linux, found myself between a rock and a hard place after upgrading from 16. However after the installation, I tried to boot Ubuntu. Grub flashes for half a second and then the guest's screen goes blank. So it happened that after the upgrade I was hoping to check out some of the new features in Intrepid, as soon as I logged in, Ubuntu just froze up, just a black screen with a mouse pointer that I could move but could not use. Tried every combination with secure boot and UEFI boot, every flag and MBR/GPT partition table. 48) the system is working fine. Hey guys, This video will help you with installing Ubuntu in your virtual machine. Reporting: Can't install Ubuntu, black screen. It came time for a reboot to which i was prompted to unlock the encryption. Thak you in advance. On most Red Hat and CentOS distributions you can find Linux screen in /usr/bin/screen. After having changed the boot order to have the USB stick first, I got the GRUB2 menu. However, my Ubuntu VMs (12. While they are not commercially supported by Canonical, they receive full support from their communities. by cpbotha 2015-02-05. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. 2 LTS on HP ProLiant server. I've booted Ubuntu on other computers before so I know how to do this and I also followed the instructions (so I had my USB drive in FAT32, etc). This is usually the second kernel. After this, Ubuntu should boot safely without any issues of screen freeze or black screen. However, my Ubuntu VMs (12. 04 system based on a AMD R290X which was running fine with the old AMD fglrx drivers (about 4 years old) to the latest 18. Some Windows 10 devices may boot to a black screen when they are started for the first time after installing the latest updates for the systems. Summary of Issue Last Friday, I installed updates to Ubuntu 18. If that doesn't work you can boot Ubuntu in recovery mode and repair broken packages. From your screenshot, I can see it's set to On, and that'll prevent you from booting from USB, until you disable it. Reporting: Can't install Ubuntu, black screen. After choosing boot options in the grub menu, though, it just displays a black screen with the blinking white underscore in the upper-left corner. ini and post its contents here. Recently I upgraded a few servers from Ubuntu 16. If you facing the black screen problem when installing the Ubuntu then this video is for you. The PC beeps correctly on startup. 04 on top of it and after restart, the black screen is permanent. 10 Oneiric Ocelot and I was a bit hesitant at th beginning but then I said why not and went for it. Symptoms: The screen becomes 100% blank (no backlight or indication that the LEDs or CRT phosphors are lit up), or black (the monitor is on and displaying video, it's just 100% pure black), at some point between the BIOS screen and the login page (GDM) being displayed. Being my SSD the boot priority and then Boot Loader over windows loader to get the grub. Recently, I saw a few questions floating around the internet about Kali Linux not able to boot correctly. I can see the grub bootloader but when I start it, it's just a black screen. Xubuntu 18. This usually happens because you have an Nvidia or AMD graphics card, or a laptop with Optimus or switchable/hybrid graphics, and Ubuntu does not have the proprietary drivers installed to allow it to work with these. I do agree with all the others here, that your system is hooped. All went fine at the start. If GRUB2 breaks—for example, if you install Windows after installing Ubuntu, or overwrite your MBR—you won't be able to boot into Ubuntu. After the install, we attempted to reboot into the installed partition, however it goes to the GRUB menu, and once we select the installation for Linux Mint it just goes to a black screen with nothing on it, we've waited over 10 minutes with no changes to the screen. however, after installation, and system boot, it just shows a black screen. black screen after starting windows screen. Let’s see how. I'm not using UEFI anyway. I only get a black screen again. However if I power off the device and power it back on, the display shows up. 10 Linux Is Finally Here To Make Developers Happy such as when Windows fails to load the Master Boot Record during the boot process. I have the blackscreen issue. I can get to Kali boot menu and select to boot from usb. I tried the following proposed fixes, without success:. * Open '/etc/default/grub' in your favourite text editor with 'sudo' permission. 04 Black Screen Startup Problem, Ubuntu Black Screen , Ubuntu 10. The installation of the very cloud-friendly Ubuntu Server 18. Mint 18 Cinnamon, Dell Inspiron 3552 ubuntu edition, Intel CPU integrated graphics, on boot of install USB black screen - gets past this with Nomodeset etc, however same problem persists inside of installed system, all updates done on Mint18. I tried changing the order in the grub menu to 1. if you're now able to boot to the login screen, shut down your PC and start reconnecting your external peripherals to see if the problem has cleared. At the boot menu of the live DVD/USB, press Tab to edit the boot arguments and add "nomodeset" at the end of the line. 04 and Linux Mint 18 (although I had Nvidia issues with Mint) Not sure why. 04 but I am having trouble booting it after the first boot (it booted and worked fine when I just installed it). with Intel810 motherboard and 128 RAM. 04 with duo 1080Ti. In a post on the Ubuntu-art mailing list, Mat Tomaszewski revealed the proposed designs, and confirmed the plan for Ubuntu to use a new boot-screen manager, replacing Usplash with Xsplash. black screen after starting windows screen. * Remove 'quiet splash' from GRUB_CMDLINE_LINUX_DEFAULT="quiet splash", i. I've booted Ubuntu on other computers before so I know how to do this and I also followed the instructions (so I had my USB drive in FAT32, etc). 10 (or any other version such as 15. Ubuntu also shows a brief purple screen, where I can escape and either try it or install it. same with all of them. I wanted to remove Ubuntu and, following suggestions online, I eliminated Ubuntu partitions. Laptop No Display Black Screen Blank Screen On Startup How to Fix Hang Up Black Screen after Installing Ubuntu 18 on Laptop Asus ROG - Duration: 14:14. The login screen is fine, but it goes all black after login. Ubuntu and many other Linux distributions use the GRUB2 boot loader. quiet splash' from kernel boot params in. It is also used to restore some linux mint functionalities when then are missing or broken. 16-generic), and latest VBox 5. I have tried to run Live CD,after initial stages of language settings etc. My solution: – on restart choose Advance in the boot window( if this does not appear with a single Ubuntu install, hold “Shift” key during boot). Sometimes you boot up a VM in Skytap and, after the VMware logo and the Windows logo display, the screen goes black. I have and Acer Aspire 4741G notebook, Nvidia Geforce GT M240 GPU with Windows10 O. I tried to change grub to boot like the live version did. Any help would be appreciated! RX580 - Black screen on initial boot after install Thread. 04 to Ubuntu 18. VGA capable of 1024×768 screen resolution. When I restarted PC I got this on black screen: "GNU GRUB version 2. The boot virtual disk is residing on the fourth partition of that disk 0. 04, RX480 boots to black screen after amdgpu pro driver install. It came time for a reboot to which i was prompted to unlock the encryption. The 'working light' on the USB stick did not flash anymore, indicating that nothing was happening. There are several possible types of boot loaders and ways for the BIOS to obtain them. Booting up a Dell XPS 13 9350, and the laptop screen goes blank after the logo appears. I tried the following proposed fixes, without success:. The machine has had (hardware) trouble with networking before, but the problem remains after 10 minutes, so I don't think it's the problem now. If you facing the black screen problem when installing the Ubuntu then this video is for you. Ok then wiped hard drive and installed Win 10 Pro and those morning black screens started. 43 too and had the same black screen problem. However, my Ubuntu VMs (12. Each reboot just boots Win10 as normal. I am running Ubuntu 12. There will show a line in white color: Entering Boot Menu. I have a Lambda Quad machine, it was installed with Ubuntu 16. Grub flashes for half a second and then the guest's screen goes blank. Then I have to turn it off to get another 5 to 15 minutes of use.