Windows 7 nvlddmkm.sys BSOD 64 bit

[cyperx]

When i start op a game for example : aion i can play for around 1h and then i get the bsod with nvlddmkm.sys , i have searched for fixes on alot of forums and nobody can seem to help me.. i have tried everything I have a Packard bell Ipower laptop with an nvidia GTX260M 1gb .

 

[kemical]

When you say everything does that include updating the graphic driver? Checking for updates for system bios and lastly what's the temperature like?