Windows 8.1 Crashes - Ethereum Mining!

[Mzie]

Good Day Everyone

I have recently started mining only ethereum using Claymore's dual miner. I'm facing a challenge, after some time (20- 45min) or when i try opening any browser, windows crashes and only displays a dark grey screen but the PC continues running. My Specs are as follows...

OS - Windows 8.1
GPU- (AMD) XFX 9 380 4GB
GPU TEMP - 60 °C- 65 °C
Drivers - Crimson 16.7.2
Core i7 - 3770
8GB RAM
2TB HDD
PSU - Corsair RM1000

I'm kindly asking for anyone who can assist me in resolving this issue.

Thank you