I'm in a similar, if not the same boat as you. Just built a new rig with this z87 board and 4790k and I'm finding my entire PC hard locks with buzzing audio after playing any game for about 10-30 minutes. I do not experience any skipping while gaming. Ctrl-alt-del does not work, reset button does not work, must hold power button to force power down. BIOS patched to 1.09
Oddly, I can run heaven benchmark for hours with no problem. Memtest86 found no faults, +12v is solid while playing, no user overclock on the CPU/GPU. CPU temps while gaming do not exceed 65*C. Prime95 fails after about 5 minutes, but I think that may be due to thermal overload; stock HSF for now and temps do reach 85*C. Get BSOD 00000124 5 seconds into running intel burn test, (again might be thermal overload).
Windows 7
Z87 Stinger (BIOS 1.09)
4790k
EVGA 970 GTX SC
EVGA 750G2
Corsair Platinum 2133 2x4GB
I've installed every updated driver I could find to no avail. I purchased another brand motherboard and upgraded HSF for testing tonight. I'll report back.
Update: The new motherboard seemed to work fine, no issues running prime95 or freezing after playing Shadow of Mordor about an hour. I swapped back to the stinger and started tinkering with a couple BIOS settings after reading its guide for another EVGA mobo. I set the CPU voltage to 1.3v, VSA, IOA, and IOD offsets to +100 mv and disabled FIVR faults and FIVR Efficiency. So far I've been able to run prime95 for longer, system doesn't freeze when starting burn test (temps are too high to let it run more then a couple of seconds for now) and also haven't had any freezing while gaming yet! I'm going to play a bit longer to see if anything happens.
Update 2: I have not had a single issue since changing these BIOS settings. Not running any overclocking, not sure what was wrong.
post edited by uber_mike - 2014/10/20 23:00:13