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869
April 2nd, 2023 10:00
T7910 Changed from legacy to UEFI selection in BIOS and computer will not boot, no display
I entered F2 into BIOS settings. Changed Legacy to UEFI and Legacy disable and secure boot.
Restarted and no display. Power switch steady white. Green blinking LSI. Some disk activity light. Keyboard and mouse light up.
Power supply test green. Reset BIOS with jumper, no display. Removed cmos battery. Tested 2.99 Vdc. Installed back into board. No display. Ctrl + Esc held down, no display. Tested with one memory stick on both cpu's. No display.
System had been working great.
Please help. How can I brick this by changing the bios?
No Events found!
mkistner370
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3 Posts
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April 2nd, 2023 16:00
Reset bios by pulling the battery again. This time it worked!
Was able to enter F2 and setup
Corrected entries to Legacy again.
Booted into windows.
Thanks!
fireberd
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33.4K Posts
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April 2nd, 2023 11:00
One likely problem is the disc format. MBR is used with Legacy, UEFI requires the disc to be formatted with "GPT".
Converting your Hard Drive from MBR to GPT | Dell US
mkistner370
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3 Posts
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April 2nd, 2023 15:00
Thanks for looking!
I pulled all drives and installed a usb recovery stick. Still no boot or display.
Does the usb stick also have to be GPT even if no other drives are installed?
Any ideas how to just reset to the factory bios settings. That should return it to legacy so I could get a screen.
Just can't get anything to display.
fireberd
9 Legend
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33.4K Posts
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April 3rd, 2023 03:00
I could have told you that. I was under the impression you wanted to switch to the more secure UEFI mode.