Update:
Okay so after a month and 10 days ... I've been through the following. Waited 4 weeks for my build to be done, and sent it back to them due to the freezing issues with my new build that Overclockers built. They did numerous tests on the pc, and replaced the PSU and the Motherboard... and I am still getting freezes, after they have sent it back to me. It's a brand new pc for ... f sake lol.
I am now finding myself in a position of despair. I'm only playing CS:GO... and its freezing again. Also freezes in other games and freezes even when booting.
Any advice? I am literally on the verge of sending it back, getting a refund... and purchasing an entire new system. This one is cursed... or the repair team at Overclockers ... aren't doing the job.
Totally dissapointed. Still holding off on the bad review, in the hope anyone here can help?