alright, ill be a little blunt, i know nothing about computer hardware and all the jargon that goes along with it, so if im not making sense just be patient with me. i got a new graphics card for christmas, the aforementioned. nVidia 256MB PCIe 6600. after about a week or two of using my new graphics card i started to notice a trend in performance. at first everything was fine. no problems. then out of nowhere the screen started to freeze up, the image on my desktop would be displaced, anotherwords it looked like lines running up and down my screen in the wrong order, and then the monitor would shut off for a second and pop back on. i could move the mouse but not click on anything, and then it would turn off for another second and then be fine again. so it did that once every 4 or 5 days. now, almost a month after christmas its doing it 2-3 times a day. and its really starting to bother me. i went and updated drivers off nvidias website. i have a 3.2Ghz processor, 1GB DDR Shared RAM, ... i believe i have proper specs to run this graphics card. Ive been reading around and i did searches and it seems the 6600 is causing a lot of problems to users. ive been told this might be a power issue, how do i check the wattage coming into my computer? oh and one more thing,... a week ago it got stuck on a blue error screen saying it was stuck in an "infinite loop" and to check the drivers. so i updated... well just today it got stuck on ablue error screen telling me "windows shut down to prevent damage to the computer" and it said in the file "nvid_disp4" (i believe that was the filename)... then i tried holding the button in to turn the computer off (hard) and just reboot, and either the fan or the processor sounded like it was picking up excessive speed, and so i pulled the power cord out thinking something bad was about to happen. anyways, this freezing up and displacement stuff is really getting me worried. any help would be appreciative. thanks.