|imperator is a newb to this forum (started yesterday I believe?) & has been giving out some questionable advice.|
You are correct that the BIOS & Vista are two separate issues & nothing you've written indicates that your problem has anything to do with Windows. It's either a BIOS problem or a hardware problem.
Have you made any hardware changes or changed any BIOS settings which may have brouhgt this on? Which device is connected to SATA1? Try temporarily disconnecting it to see if it stops the freezing. If SATA1 is the HDD, you obviously won't get into Windows, but if the system doesn't freeze with it being disconnected, it *may* point to a problem with the HDD.