Aspire 7 ( Aspire A715-75G) BOIS and Windows not booting...

rajputhemant01
rajputhemant01 Member Posts: 3 New User
edited January 2022 in Aspire Laptops
I wanted to Dual Boot my Aspire 7 ( Aspire A715-75G)  with Windows and Linux, but during Linux installation disk partition weren't showing. So i changed SATA Mode from "Optane without RAID" to "AHCI".
But after doing so, my system is unable to boot in Windows 11 and BIOS, it shows a fixed white underscore in top left corner when i try to get in to BIOS by pressing F2 or by UEFI Firmware Setting.
How to fix this problem?

Thread was edited to add model name to the title


Answers

  • JackE
    JackE ACE Posts: 44,868 Trailblazer
    Press and hold power button till machine shuts off. Press and hold F2 key. While still holding F2 key, turn the machine on to try to get back into the BIOS to try to re-enable Optane in UEFI mode. Do not try to change SATA mode until you can get the machine to boot normally again with Optane memory and report back here for the correct procedure to convert to AHCI mode.

    Jack E/NJ

  • rajputhemant01
    rajputhemant01 Member Posts: 3 New User
    edited January 2022
    I can not go into BIOS, after pressing and holding F2 key, black screen with a underscore(doesn't blink) shows in the upper left corner.
  • padgett
    padgett ACE Posts: 4,532 Pathfinder
    Try removing the new disk entirely. Then see if you can get into the BIOS.
  • rajputhemant01
    rajputhemant01 Member Posts: 3 New User
    I've recovered windows and now I'm able to boot into BIOS, now how to dual boot? SATA mode is set to Optane without raid.

  • JackE
    JackE ACE Posts: 44,868 Trailblazer
    (1) Press Win+R.
    (2) Enter 'msconfig'. Click boot tab
    (3) Check safe boot box.
    (4) Shut down Windows normally
    (5) Turn machine back on and immediately tap F2 to enter the BIOS menu
    (6) Change SATA mode to AHCI
    (7) Press F10 to save settings and exit.
    (6).Let Windows boot into safe mode
    (7) Press Win+R
    (8) Enter 'msconfig' again. Click boot tab
    (9) Uncheck box for safte boot
    (10) Shut down Windows safe boot normally
    (11) Turn machine back on and normal Windows should boot in AHCI mode to install Linux alongside Windows

    Jack E/NJ

  • Easwar
    Easwar Member Posts: 6,727 Guru
    Hi @rajputhemant01,

    https://www.youtube.com/watch?v=p9gv3TMxBy4

    1. Step 1: Create a live USB or disk. ...
    2. Step 2: Make a new partition for Linux Mint. ...
    3. Step 3: Boot in to live USB. ...
    4. Step 4: Start the installation. ...
    5. Step 5: Prepare the partition. ...
    6. Step 6: Create root, swap and home. ...
    7. Step 7: Follow the trivial instructions.
  • JackE
    JackE ACE Posts: 44,868 Trailblazer
    (1) Press Win+R.
    (2) Enter 'msconfig'. Click boot tab
    (3) Check safe boot box.
    (4) Shut down Windows normally
    (5) Turn machine back on and immediately tap F2 to enter the BIOS menu
    (6) Change SATA mode to AHCI
    (7) Press F10 to save settings and exit.
    (6).Let Windows boot into safe mode
    (7) Press Win+R
    (8) Enter 'msconfig' again. Click boot tab
    (9) Uncheck box for safte boot
    (10) Shut down Windows safe boot normally
    (11) Turn machine back on and normal Windows should boot in AHCI mode to install Linux alongside Windows

    Jack E/NJ

  • ttttt
    ttttt Member Posts: 1,947 Community Aficionado WiFi Icon
    @rajputhemant01

    In BIOS, hit F9 ( Load Defaults) and F10 ( Save and Exit) before you try to boot  Linux.

    Your Win 11 is probably in RST-Optane mode.

    Once your Linux booted O.K. a few times, I believe you can let the PC constantly stay in the RST-Optane mode.
  • JackE
    JackE ACE Posts: 44,868 Trailblazer
    (1) Press Win+R.
    (2) Enter 'msconfig'. Click boot tab
    (3) Check safe boot box.
    (4) Shut down Windows normally
    (5) Turn machine back on and immediately tap F2 to enter the BIOS menu
    (6) Change SATA mode to AHCI
    (7) Press F10 to save settings and exit.
    (6).Let Windows boot into safe mode
    (7) Press Win+R
    (8) Enter 'msconfig' again. Click boot tab
    (9) Uncheck box for safe boot
    (10) Shut down Windows safe boot normally
    (11) Turn machine back on and normal Windows should boot in AHCI mode to install Linux alongside Windows

    Jack E/NJ