I am having some serious issues with my new ATI 9500 Pro and my Dell Demension 4400. I upgraded to this card from a GF2. With the new cad in I get a Hard drive write error and rebbot every time. But with the old card it works good. The card works in my sons computer just fine. Please HELP!!! Here are some specs: DIMENSION 4400,P4,2.4GHZ,MMT,PREM SND 1GB DDR SDRAM AT 266MHZ,TIED DELL ENHANCED QUIET KEY KEYBOARD,MG,TIED 80GB 7200 RPM ULTRA ATA,43/8200,WD,FACT WIN XP PRO,ENG,DIM,TIED 10/100 PCI FAST ETHERNET NIC,CNET,DIM V.92/56K TELEPHONY WIN MODEM,SND,TIED 40X/10X/40X CD-RW DRIVE SOUNDBLASTER LIVE 1024 VOICES,DIM,FACT Thanks guys!!