I just got a new motherboard; ASRock G31M-S R2.0, a DDR2 2GB RAM and an Nvidia GeForce GT 220 graphics card which requires a minimum powersupply of 300w. Ever since I had all these components installed I have been having problems installing an OS especially win 7. It brings up an error in the middle of installation and then I'd start over. Eventually, I installed the win 7 but every other thing (software or application) I try to install brings up an error in the middle of the installation and most times after the error, I get a bluescreen, then the pc restarts. I've tried everything...I tried installing with and without the new graphics card, I've tried installing with another RAM, I've tried installing on another drive etc...still, I get the same error. I don't know what exactly is giving the problem...whether it's the graphics card, the RAM, the motherboard, the Hard-drive or the power pack. I can't install anything and then the occasional crashes (blue screen). Please any advice, it's driving me crazy.