I had the same problem after using VPC 2007. (Not running SP1 though & Vista
64bits)
After examining the memory dump & using Google I found out the problem was
caused by a (integrated) network driver.
After downloading & installing a new driver the BSoDs were gone!!!

A
shame though that this (signed) driver is not downloaded automaticly when
selecting the driver update function.
"rehoult" <(E-Mail Removed)> schreef in bericht
news:57A02F1A-C879-4EC9-905C-(E-Mail Removed)...
> Hi all,
>
> I just installed SP1 from technet recently, and decided to try my hand at
> virtualization for the first time today. Once Virtual PC 2007 is
> installed,
> my system BSoDs during every boot. The only way to gain access to windows
> is
> safe mode, or using the last known good state.
>
> After using last known good state, VPC 2007 is installed, but won't work
> (as
> the drivers/services have been removed during install). I've uninstalled
> the
> remainder of VPC 2007 and rebooted; no problems. Tried again to installed
> VPC, and after reboot it once again BSoDs endlessly.
>
> So it stems the error is recreatable (at least on my machine). Any
> thoughts
> on what's going on or how to fix it?
>
> Cheers,
>
> Ryan