XP Pro Install - Now I Cannot Log in

[Guest]

Get the error message:

Activate Windows:
The instruction at "0x77263764" referenced memory at "0x00000000"
The memory could not be written.
Click OK to terminate or Cancel to debug.

When I try to debug or terminate, I'm sent back to the log in screen and the
cycle starts again. There was an OEM version of XP Pro on the computer but I
was having an issue and thought I'd try my disk from the desktop and load
reinstall XP that way. That's where the real trouble (as referenced above)
began.

 

[Guest]

OEM systems are impossible to change to a standard install. The Product Key
is locked to the original 'factory setup'. You needed to be backed up.
Putting in a blank drive and running the original as a slave to gather the
data is about your only hope (*if your system doesn't also depend on a hidden
partition for the recovery). If you do the OEM 'recovery' it will probably
blithly announce that 'all data will be lost'