Computer reboots after printing

[BleachOperator]

Having a problem with some excel files. When i try to print out a specific file that i know is clean, my computer reboots itself everytime. This does not happen all the time only occassionally but a specific file does it all the time. Sent the file to a couple other users and i get the same results. Also tried on different printers and same thing happens. Please inform me of any diagnosis steps i can take to solve this problem

Running windows xp sp2 with good ram in all machines.
The files were created and sent from a trusted employee.