Problem with radeon hd4890

[Guest]

Hello
I have a ati radeon 4890 triple x version and when i play games that use physx the computer jost went off after 1 or 2 hours every timer ! and its getting kind of annoying

 

[wa1]

hello... welcome to the forum.
first of all, list the rest of your system specs, like CPU, RAM, PSU, Monitor...