Crash/Bluescreen. (Tried fresh copy and changed ram already)

[Corei7xworldwide]

Hi First of all im so glad to be in this community and thankful that a lot of you pros are here,
i have a problem, everytime my PC runs Dota2 about 1 to 2 hours it will slow down then crash or blue screen. i already replaced ram, i also installed a fresh copy of windows. i have the same pc with good and smooth run. i dont think its hdd and Game client because i installed a fresh game and HDD is working if you wont play heavy games.

any clue what's the problem?

: Windows 7 ROG Rampage (64 Bit) (E3) 64-bit (6.1, Build 7601) Service Pack 1

AMD A8-7600 Radeon R7, 10 Compute Cores 4C+6G (4 CPUs), ~3.1GHz
Memory: 4096MB RAM
Available OS Memory: 3532MB RAM
Page File: 3387MB used, 2189MB available


DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode

 

[Corei7xworldwide]

Anyone please help

 

[marksavio]

most likely your GPU is dead/dying. if the crash behaves that way. can you run a quick benchmark of your system first? just download and run the tool form the site below. and paste teh resulting web link here.
http://userbenchmark.com