Hello,
I have a DQ77KB mother board with intel i3 3220T processor.
I have update the BIOS to v52. After the upgrade, I have reboot, check the BIOS and reboot again.
Now, I have a black screen with 3 long beeps (memory error) and impossible to boot.
The memory is OK, I have test it with an other safe memory module and I have the same problem.
I can't go in the BIOS setup, the screen is black before. I have try to reinstall BIOS this "F7", and also to restore it with the BIOS jumper.
I have also try to "clean" the BIOS : unplug all cable, remove the BIOS battery, wait 30 minutes. The problem still the same.
I think the BIOS is corrupted but I don't know how to restore a clean BIOS. If you have any idea...
Best regard,
Stéphane