So my cousin is into gaming and keeps pestering me to research a graphics card for him to run his games smoothly and still within his budget. His PC was a 2 year old P4, 1gb RAM, 200gb HDD Packard Bell PC and his old graphics card was a Nvidia 6200. Without much thought, I just took the money he gave me and bought an Nvidia 8600 card. It worked perfectly... for 4 weeks then suddenly I get a call that somehow his PC is now slowing down to a pitiful crawl and takes ages for anything in his PC to open. I can't say that it's my fault as I explained the problem of putting in something more powerful than his PC can handle but I suppose I have to try and find the answer... and I'm stumped. Any suggestions as to what the problem could be before he decides to just buy another PC?