Hi i hope someone can clear this out for me, because i've tried the 2K support and some robot entertainement forums and neither of those could help me.

Well here is the problem,in some especific games(Orcs must die, orcs must die 2, bioshock,bioshock 2,warframe beta,dungeonland) after some minutes, sometimes seconds of gameplay(bioshock 2 and Omd 2 take only some seconds and Dungeonland takes like an hour ) my pc blackscreens and it crashes, reboots and all that stuff, i have tried a lot of thigs and nothing worked.

Here is the event from the event viewer:

Log Name: System 
Source: Microsoft-Windows-WHEA-Logger 
Date: 19/08/2012 15:37:34 
Event ID: 20 
Task Category: None 
Level: Error 
Keywords: 
Description: 
A fatal hardware error has occurred. 
Component: AMD Northbridge 
Error Source: Machine Check Exception 
Error Type: HyperTransport Watchdog Timeout Error 
Processor ID: 0

I just want to know if is possible that my processor is broken or something because it still got warranty if i need to replace it.

my specs

AMD FX 4100 
8.2 GB RAM
Windows 7 
GeForce GTX 560

I got the 2K support ticket for more info:

http://support.2k.com/requests/239773

I'm pretty sure my bios and drivers are up to date, hope someone can help me with this.