Can't see bios screen at all, just blue screen.

refmon

Distinguished
Dec 27, 2012
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Not sure how this happened, since I just entered bios a week ago to use memtest. After I press delete I just see the blue screen with UEFI BIOs at the top.

Using Z77X-UD3H
 
Try resetting BIOS by taking the MB battery out for 10 to 15 mins, with the PSU unplugged from power. This should reset the BIOS then you will have to boot into BIOS and set it all up right. Starting with setting optimized defaults then the memory speed & timings and voltage, etc.