I am trying to upgrade my older PC's operating system from XP (Home Edition-
service Pack 2) to Vista Home Premium. I've run the Upgrade Advisor and
performed all Pre-installation tasks (removed Roxio, disabled virus
detection, etc.). The Advisor indicates that Vista will run on the system -
although the maximum memory is limited to 512MB.

The install / upgrade seemed to progress nomally - although it took several
hours - but following one of the system install reboots, all that was
displayed was a blank (black) screen with the white mouse pointer - nothing
else. After 8 hours of "waiting for something to happen", I concluded that
the install failed and restored XP(fortunately).

Any thoughts / suggestions as to what went wrong and how I might proceed?