Sometimes after I start up my computer it freezes in the "press Del or F2 to enter UEFI BIOS setting" screen and doesn't react to those buttons. The backlight on the USB keyboard is lit but it doesn't seem to bee active as caps lock can't be turned on.

My motherboard is Asus P8Z77-V LK. It's stand-by led is on in the start-up but DRAM led is off. This problem has occured only when cold booting and never (yet) when restarting from Windows. I have tried running memtest and no errors were found during it.

The system is also very stable after properly booting. I updated BIOS once but it was a long ago and these problems started showing up quite recently. I have tried changing the boot order for my hard drives with no effect.

Any help would be appreciated.

  • Does the same thing occur with another keyboard or if you move the keyboard to another computer (Troubleshooting 101, try to determine which part if failing. desktop/mobo, or keyboard). Does unplugging and replugging the keyboard help (to reset the keyboard) ? – Hennes Jul 13 '13 at 10:36
  • Unplugging and replugging has no effect. I unfortunately don't have another computer to test with but I could try to use another keyboard and see if the problem persists... – fubar Jul 13 '13 at 11:07

I can't remember exactly what it was, but there is a setting in the BIOS in regards to FULL USB support. I had to do that. Actually sometimes I have to boot into windows 8 and then tell windows 8 I want access to the BIOS. wild stuff.

If you have a wired USB keyboard kicking around you might want to confirm you are completed locked out. Does your MB show a number when it's frozen like that? On my MB there are 4 status numbers. I always have to look in the book when things go crazy.

Good luck!

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