In my network (100 users), I've got one or two users that have problems when printing.
It happens with MS Office (powerpoint) document.
When the user opens it and print it, the computer (D400) reboots.
But when printing that same document with somebody else computer's (Optiplex), it works perfeclty.
Same issue with another user (Optiplex), when copying (CTRL C / CTRL V) a web page into Word, and then prints it, it reboots..
Every computer has the same ghost.
I've updated windows to SP4, installed every new patch/update I could find..
So the only frew things I need to try is to: updat the bios of that Dell D400, format everything and reinstall..
The user print over the network of course, and these are Xerox workcentre pro 32 and 40 printers.