I have a TouchSmart PC IQ504 desktop at home. I have purchased it recently only. I am a gamer and I like playing games on my system. I would like to say that the speed of my system is really good. I think that my video card present is corrupted and dead because of which I get an IGFX error. I have gone through troubleshooting and all but off no good. I have my video card enabled, my system freezes and the screen gets pixelized. I want to know that is there any way to upgrade or replace the card. Any suggestions would be highly appreciated.