Even if you click F8 before loading and chose Safe Mode the display shows: +------------------------ |Loading Windows Files | | | | |Please wait... +------------------------ and hangs up But this window should display: Loaded: C:\Windows\System32\drivers\volmgrx.sys Loaded: C:\Windows\system32\drivers\pciide.sys Loaded: C:\Windows\system32\drivers\PCIIDEX.SYS etc. (HDD indicator blinks about 0.5 seconds and goes out) What I mean to say is that it is obvious that Vista hangs up itself at the very beginning of loading, but not because of drivers. What can be the problem?

See if you can boot to the vista DVD. "Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10

I agree with jefro, try the Vista DVD. On the Vista DVD you have the option to restore the boot files, to the default configuartion. My Maxed Out Pentium 4! Dell Dimension 4600 Pentium 4 HT @ 3.4GHz 4GB DDR Ram (2x500GB) SATA II Drive Windows Vista Ultimate NVIDIA 7600 GT Computing.net Member since 2003!

How does it respond if booted into the bios? If it's ok in the bios then it's most likely software. Apart from that on the hardware side check the ram. Do you know how helpless you feel if you have a full cup of coffee in your hand and you start to sneeze? ~Jean Kerr~