I have an HP Pavillion desktop about 2 yeas old. Pent 4 3.2ghz, 2gb ram nvidia 8 series graphic card, 400w power supply.... I tried to install vista and everything runs deathly slow. The installation alone took me almost an hour. It seems to use about 10-15 minutes to complete every single thing. Once I finally get to the log on screen, put my info in and click ok, another 15 minutes to sign on to vista. What the heck is wrong? I did cean install, erased everyhitng from the 250GB HD.