Acer aspire a515-51g showing black grub screen

Roy007
Roy007 Member Posts: 15

Tinkerer

edited October 2023 in 2020 Archives
Iam using aspire a515-51g. Keyboard was not working. Power key was not working. I had to keep pressing other keys to turn the laptop on. But suddenly this grub screen appeared. I replaced keyboard. Now keyboard is working fine. Also if i go into BIOS it shows boot priority order as some blurred text. If i try to set priority order as default it shows <null string>.

Best Answer

  • Roy007
    Roy007 Member Posts: 15

    Tinkerer

    edited October 2020 Answer ✓
    Problem solved.
    Just ran bcdboot D;\windows  and it booted correctly. I was running 'C:\windows' later I found I had installed my windows in D. 
    Thanks anyway man.

Answers

  • JackE
    JackE ACE Posts: 45,092 Trailblazer
    Are the other BIOS tabs also blurry? Jack E/NJ

    Jack E/NJ

  • Roy007
    Roy007 Member Posts: 15

    Tinkerer

    Boot menu also says unknown device
  • JackE
    JackE ACE Posts: 45,092 Trailblazer
    Are the other BIOS tabs also blurry? Jack E/NJ

    Jack E/NJ

  • Roy007
    Roy007 Member Posts: 15

    Tinkerer

    No only boot priority entry is blurry
  • JackE
    JackE ACE Posts: 45,092 Trailblazer
    Did you try to install Linux in legacy mode? Jack E/NJ

    Jack E/NJ

  • Roy007
    Roy007 Member Posts: 15

    Tinkerer

    I was using ubuntu in the past. Then i removed it and started using windows. Everything was working fine but two weeks back power button stopped working. Keyboard might have shorted. If i press any other key except power key pc was starting but shutting down after 5 seconds. As long as i continued pressing keys it remainef on. I think pressing those keys might have triggered something
  • Roy007
    Roy007 Member Posts: 15

    Tinkerer

    My guess is that there is some problem in bcd. Iam seeing grub only because i did not remove ubuntu correctly. 
    I tried to repair windows with bootable usb but that did not work.

  • JackE
    JackE ACE Posts: 45,092 Trailblazer
    Did you open the bottom cover of the laptop for any reason about two weeks ago? Jack E/NJ

    Jack E/NJ

  • Roy007
    Roy007 Member Posts: 15

    Tinkerer

    I did not open it comoletely just checked whether back power switch was correctly pressing
  • Roy007
    Roy007 Member Posts: 15

    Tinkerer

    I have gpt partitions. I checked all the partitions using diskpart, data is there and partitions are showing healthy. I just dont want to loose my data
  • JackE
    JackE ACE Posts: 45,092 Trailblazer
    >>>just checked whether back power switch was correctly pressing >>>

    Did you tape a spacer inside the back cover so that it presses harder against the switch button? Jack E/NJ

    Jack E/NJ

  • Roy007
    Roy007 Member Posts: 15

    Tinkerer

    Yes i did that
  • JackE
    JackE ACE Posts: 45,092 Trailblazer
    >>>Now keyboard is working fine. >>> I just dont want to loose my data>>>

    If everything turns on OK, then I suggest that you remove the drive. Then connect the drive to another computer's USB port with a USB-2-HDD/SSD adapter cable (less than $10USD), Get your personal data off of the drive before we try to tinker with it's EFI partition to get it to boot.  But before you attempt this, what does your BIOS Information tab look like. Please post a phoneshot if possible. I'd like to know if the drive is fully identified as to brand and model number in the Information tab. Jack E/NJ

    Jack E/NJ

  • Roy007
    Roy007 Member Posts: 15

    Tinkerer

    Efi partition was raw i converted it to fat32. But still not working.
    What would happen if i delete efi and create it again?
  • JackE
    JackE ACE Posts: 45,092 Trailblazer
    RAW means it somehow got corrupted. Don't delete it yet. Try this. Go back to diskpart. Select the EFI partition. Assign letter a letter to the EFI partition such as Y:. Then exit Diskpart. At the X ;\ command prompt, enter 'Y:' At the Y ; \ command prompt enter 'dir /a'. Do you still see an EFI folder? Jack E/NJ

    Jack E/NJ

  • Roy007
    Roy007 Member Posts: 15

    Tinkerer

    Did not find any file
  • JackE
    JackE ACE Posts: 45,092 Trailblazer
    OK. At the Y: prompt enter these commands in order.

    (1) md efi\microsoft\boot
    (2) cd efi\microsoft\boot
    (3) bootrec /fixboot
    (4) bcd boot /l en-us/s Y: /f /ALL

    If you get any errors, stop.

    Jack E/NJ

    Jack E/NJ

  • Roy007
    Roy007 Member Posts: 15

    Tinkerer

    Access denied for fixboot
  • Roy007
    Roy007 Member Posts: 15

    Tinkerer

    edited October 2020 Answer ✓
    Problem solved.
    Just ran bcdboot D;\windows  and it booted correctly. I was running 'C:\windows' later I found I had installed my windows in D. 
    Thanks anyway man.

  • JackE
    JackE ACE Posts: 45,092 Trailblazer
    Congrats on your success. Thanks for reporting back. Jack E/NJ

    Jack E/NJ