Good day, First of all I am not realy into computers so I am quite ignorant when it comes to this subject, also I don't know if this is the proper section to post this. With that said the problem: 1 month ago I started to play Counter Strike GO as usual, however the moment I get on the menu the screen gets these blue and purple squares and crashes. This was the blue screen I receaved: https://forums.lenovo.com/t5/image/serverpage/image-id/30647i41DE502959C00DD5?v=mpbl-1 (Pic from google.) Then the computer proceeded to restart and I started the game again to try to understand what would happen. Needless the say it crashed again. I open Nvidia manager (or whatever is called) and on the 3D management when render the 3D the window stops responding. This is how the 3D render looks seconds before crashing: http://I.imgur.com/Asju6Lc.png And this mensage poped over and over again: "Nvidia windows kernel mode driver xxx stopped responding and was recovered successfully" I tried to update the drives and no results. Then I search around and I noticed that I am not alone, and some said to use Display Driver Uninstaller and so I did, I erased everything Nvidia related. And funny enough the error was gone even tho the performance took a big hit. But for some reason Windows installed Nvidia stuff again and so the problem was back. At some point I decided to format the pc and nothing the error and that Kernel mode deal is still here. I also made a GPU-Z test to see some info I got from the crash: http://I.imgur.com/LusQ6ek.png I quit, I just don't know what to do besides getting it to a proper shop. Also my friend told me that this could be related to the fan being full of trash but like I said I am not comfortable opening the PC but if that might be the problem I have no other choice. Heres the SPECCY Link. http://speccy.piriform.com/results/753Q8Jf3UeFApdS2TgTBtre Processor: Intel Core I5 3210M CPU 2.50GHZ Ram: 6.00 GM (5.86 GB usable) <- I don't get that usable part 64 bit in 64x Windows 8.1 Nvidia Geforce 635M (2gb) and Intel Core HD Graphics The screen is not original. If more info is needed I get it. Thanks for reading.