PC goes to BIOS on startup

peterpanm

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Jul 1, 2011
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Hi everyone, I am having an annoying problem with my PC for last couple of months. everytime I start my PC it goes to BIOS. I googled for it and tried some settings in BIOS but none is working. so far i have tried:

change motherboard battery
disable CPU QFan control, also tried advance mode
ignore chassis 3 QFan (where liquid cooler fan is connected)
disable fast boot
disable legacy USB support

when i turn on my PC the QCode shows AO, i guess its supposed to show 40 in windows 10, 8.1 etc.

PC specs:
Asus maximus vi hero (BIOS is up to date)
core i5 4440
corsair hydro H45
Asus Strix GTX750Ti
sound blaster Z (realtek is disabled in BIOS)
16 GB RAM
cooler master GX550W PSU
Windows 10 1073 64bit

I have 500 seagate hard drive which have lots of bad sectors but its woking fine, i don't know if hard disk is the problem.

Thanks