Hi everybody
Ever since thursday, my brother's motherboard (Gigabyte GA-Z87X-UD3H) loops LED code 15 to 36 to 32 to blank (I suppose restart) and repeat. Peripherals (All that's connected is a keyboard and mouse that work when it boots, I'll get to that later) don't receive power during that. The manual describes the codes as follows:
15 - Pre-memory North-Bridge initialization is started.
32~36 - CPU PEI initialization
I've tried reseating the CPU with no success. Now, the weird thing to all of that is that whenever I change a hardware component (what I've been doing at first is switch RAM modules around, now I've found out switching to backup BIOS, booting, force shutting down, switching to main BIOS again works too) it boots up normally. When in Windows restarting works, as does hibernation. Only when I shut it down completely (Selecting it in Windows or holding the power button) it loops from 15 to 32 again on the next boot.
Hardware:
Gigabyte GA-Z87X-UD3H
Intel i5 w/ 1150 socket
2x 8GB 1667MHz Kingston RAM (Tried them in all possible slot permutations, still looped)
Multiple different hard drives and SSDs (tried booting up with none of them plugged in, still looped)
NVIDIA GTX 760 (tried booting up without this one installed too)
Has anyone got an idea what could cause this?
Thanks