Question Why does my screen turn off and headphones give strange audio.

Sep 8, 2019
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Hello I am looking for some help. I built my computer a few years back and now when I play classic WoW at least once a day or so it will turn off and the audio coming through my headphones will be like "brrrrrrr" basically a very annoying sound. I have to turn off my computer at this point and turn it back on. I thought it was a cooling issue so I cleaned my heat sink and put new thermal paste on but that is not helping. My specs are as follows from speccy:
Summary
Operating System
Windows 10 Home 64-bit
CPU
AMD A10-7700K 79 °C
Kaveri 28nm Technology
RAM
8.00GB Dual-Channel DDR3 @ 931MHz (10-10-10-30)
Motherboard
ASRock FM2A88X+ Killer (CPUSocket) 27 °C
Graphics
VE247 (1920x1080@60Hz)
2047MB NVIDIA GeForce GTX 750 Ti (EVGA) 29 °C
Storage
1863GB ST2000DX001-1NS1 SATA Disk Device (SATA ) 29 °C
Optical Drives
TSSTcorp CDDVDW SH-224DB SATA CdRom Device
Audio
Realtek High Definition Audio

If there is anything else I can help with please feel free to ask. I just want to be able to play my game and not worry about it crashing on me. Thank you for your time I appreciate it.