pcmaster

My pc consists of: ASUS P4C800Deluxe MB Intel Prescott 3.2Mgh 1GB DDR Kingston Maxtor 120GB HD Leadtek 6800GT VGA I have installed vista 5112 in a formatted drive in sata as well in ide connection.From my dvd as well as from a virtuall drive after i made an iso of the dvd in my computer.I get allways the same problem . After the instalation finishes and the desktop is loading for the first time after the the loading personalised settings for outlook express 6 tab right before the media player i get a warning saying INF Install Error: Access Denied and my comp reboots . Any ideas or help will be appreciated . Thank you .