I have not heard of any issues related to this before, but what i can tell you is that Windows 10 is extremely unstable and unreliable for some people. Windows 10 is a love/hate situation. I've used windows 10 before, i like the interface, but it has too many problems to count & the updates are...
Sure, add me! (Only game you listed that I don't play is Foraz Horizon, but I love racing!)
Steam: http://steamcommunity.com/profiles/76561198072384916/
Skype: the.dreaming.pixel (A Bird)
Discord: coolcreeper24#1117
If you're buying a new gaming pc, I'd recommend you either buy your own parts and build it yourself or simply buy it from a gaming pc manufacturer like cyberpowerpc, alienware, or IBuyPower. Here's a parts list i came up with on PCPartPicker: http://pcpartpicker.com/list/JtYM3F
Edit the list as...
It sounds like an overheating problem, if you're unable to monitor the temps before crashing, then here is one way to find out. Take the side panel off the case exposing the innards of the machine. Then you can try 2 things. 1. try placing your hand near or on the gpu to see if it's hot. 2. if...
You've damaged your GPU it seems, always be careful when Overclocking. If the warranty covers it see if you can replace it, if not you should buy a new GPU. I can help you with that, but I'll need to know your Power supply, CPU, and budget please.
Just do as I said if you can! and if that doesn't work well, then I'm sorry I can't help you. Last resort is to buy a new PC or build another. If you have to get another PC, buy from here http://www.cyberpowerpc.com/ they make the best PC's you can buy instead of building.