guys, before this error come out, my gforce 4 mmx gave hardware failure. then i change my mobo to asrock p4v and new gc fx5500. however, i keep getting error " driver irql not less or equal" when im playing heavy games and " PFN list corrupt" when trying to install driver or software. i tried reformat my pc, and i had to take out my gc coz it kept givin me error when winxp tried to install network. after i take it out, winxp install fine.. i've done that memory thing and everything is fine. here's my minidump Minidump i hope u guys can help me with the minidump . i wasted a lot of money on my gc..