So frequent bluescreens started on late july to now(august 2014) and these bluescreens suddenly appear whenever I close a game or alt-tab. The games that I play are on steam(dota 2, warthunder, warframe, civilization V and more. I am not using a genuine software but I have been playing those games starting on early february and now problems regarding bluescreens showed up till now. I ignored earlier bluescreens till I lost my internet connection(even tho the dsl and ethernet is connected). This is not my computer I am using to post but here are the details on my own PC.
OS:Windows 7 Ultimate(not genuine)
Vidcard:Geforce GTX 650 TI
Processor:Intel Core I5