PC crashes to black screen

My PC seems to be crashing to a black screen a lot, and then I can hear sound for about 2 seconds before it starts skipping sound, making a buzzing noise that changes in tone before going silent after about 5 seconds. Then, I have to hard reboot my computer. It seems to be happening quite randomly, and only after I got my PC repaired. It started to happen when I started to play Diablo 3, and has been crashing while i've been playing it only (it's the only game i've been playing recently so it's hard to tell, and I can go days without this happening and then all of a sudden it happens 3 times in a day).

Operating System
Windows 10 Home 64-bit
CPU
AMD FX-6300 29 °C
Vishera 32nm Technology
RAM
8.00GB Dual-Channel DDR3 @ 802MHz (11-11-11-28)
Motherboard
ASUSTeK COMPUTER INC. M5A97 R2.0 (Socket 942) 28 °C
Graphics
LCD TV ([email protected])
2048MB ATI AMD Radeon R9 200 Series (C.P. Technology) 35 °C
Storage
931GB Western Digital WDC WD10EZEX-75M2NA0 (SATA) 27 °C
Optical Drives
TSSTcorp CDDVDW TS-H653N
Audio
Realtek High Definition Audio