BSOD since upgrading GPU

[abs_rio]

I recently upgraded my graphics card to the msi lightning gtx 580 purchased from scan. However, I've started getting the BSOD which says "system service exception" and more frequently so in the last few days. It tends to happen when i'm gaming especially.
This rarely happened with the ATI 5870 I had previously.

Any advice on how to troubleshoot would be grateful?

[Ben @ Scan]

Hi

What PSU have you got in the system?

Regards

Ben

[abs_rio]

I've got the corsair 1000w psu. My specs are listed under the avatar.
It seems to happen with certain games only which is strange (could be the overclocked i7 maybe?)

[Ben @ Scan]

Hi abs_rio

Please email any minidumps in c:\windows\minidumps to systemsupport@scan.co.uk include your invoice number or build number in the subject line we will look into this tomorrow for you

Regards

Ben