Spontaneous Restarting

I have just upgraded my OS from Win98 to XP Pro the other
day and I have found that my system randomly restarts
itself. I followed some MS advice and I turned off
the 'automatically restart' check box as one of the
settings. Then, the next time I got a stop command (it
would restart otherwise), it goes to the blue screen as
intended, with the error, PFN_LIST_CORRUPT.

Is there any way I can resume this? MS says to look
for 'bad' or 'incompatible' drivers, but how do I find
one driver that is bad out of so many? Does anyone know
what the problem may be or what system information you
may need to help? Thanks.

Si