umm,,anuff memory thats for sure,,umm,did you check if auto update is turning its self on? or nortons?
geforce 3 should be good anuff,,ever have problems with it before?,,you have anothere card you can try in its place just too see if there is anything wrong
it mite just be a simple hard drive crashing,,doesnt matter what scan disk says or defrag,,they lie to you somtimes,,,if you know what kinda hard drive you have,,i guess you can go to there web site,,and download a scaner that will work for your drive,,because windows stock scan disk doesnt not pick up every flaw in a hard drive<~~my cousins computer just had a bad hard drive,,but scan disk came out perfict everytime and defrag,,and every time we pulled the trigger we got grafics lag,,and frame rate would go down to nothing,,,well after allmost rebooting his hole computer all his drivers,,checking vid card in my computer,,after all the trouble,,it turned out too be just a stupid hard drive,,it works great now,,lol