I have a D 1845 and I'm having a problem running NHL 06 or 07. When running off ac power the graphics are really jerky making the game unplayable but this does not happen in any other games. When running off battery the graphics are fine! I have had the laptop repaired lots of times due to power-related problems (it would seem) and have had new motherboards, fan replaced and so on. I have tried running the laptop with the battery taken out so the problem seems to be to do with the power somehow. Any ideas?
Cheers