I apologize in advance if this is in the wrong section. I bought my first gaming rig back in June of last year and about 6 or so months ago I've been getting an issue were my computer will randomly lock up and a buzzing sound will come out of the speakers. I get absolutely no response from the mouse or keyboard and I have to hit the reset button for it to reboot. This usually happens when I'm either playing a game (Wow for instance) or watching something online like on Hulu or YouTube. Everything is all stock, nothing is overclocked. I've been mentoring my temperatures with Realtemp. Temp stays around 40-50C when under load. I ran memtest86+ for about 17 hours, passed 7 times with no errors, also ran my computer with prime95 and everything seems to check out. I'm really not sure what is going on and I don't know where to go from here. I also reformatted my drive, reloaded windows 7, re-installed my drivers, but nothing helped. Heck, it seemed to have gotten worse after that because before the wipe it was every other week, now it's like 2 times a day.
my build-
CPU- i7-3820 Quad-Core 3.60 GHz 10MB Intel Smart Cache LGA2011
HDD-2TB (2TBx1) SATA-III 6.0Gb/s 64MB Cache 7200RPM HDD
Video card-AMD Radeon HD 6870 1GB 16X PCIe
RAM-16GB (4GBx4) DDR3/1333MHz Quad Channel Memory
Motherboard-ASRock X79 Extreme 4
OS-Windows 7 Home Premium (64-bit Edition)
Any help would be appreciated
my build-
CPU- i7-3820 Quad-Core 3.60 GHz 10MB Intel Smart Cache LGA2011
HDD-2TB (2TBx1) SATA-III 6.0Gb/s 64MB Cache 7200RPM HDD
Video card-AMD Radeon HD 6870 1GB 16X PCIe
RAM-16GB (4GBx4) DDR3/1333MHz Quad Channel Memory
Motherboard-ASRock X79 Extreme 4
OS-Windows 7 Home Premium (64-bit Edition)
Any help would be appreciated