PC Crash - CS:GO and Dell Data Vault Wizard - help!

I have a Dell XPS 8700

Windown 8.1 Pro
Processor: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz
RAM: 16GB
System: 64-bit, x64-based processor

Basically while I'm playing CS:GO my PC decides to freeze up after anywhere between 5mins to 30 mins of play - my screens go black, occasionally with vertical lines, and the audio starts buzzing and 'contorting'. I end up having to manually shut down and turn back on again.

I checked the event log and it seemed to be an issue with the Dell Data Vault installed on my PC. So I decided to delete the dell data vault folder. But the problem still occurs because: "The Dell Data Vault Wizard service failed to start due to the following error:
The system cannot find the file specified" - event log.

I've downloaded various uninstall programs but none of them detect Dell Data Vault because I deleted it sad

This problem only occurs whilst playing CS:GO

If anyone could help that would be great, I've scoured the internet for solutions but there seems to be none.