Computer shuts down when starting Autocad?

[robotgrass]

Hello, just installed Autocad 2009 Mechanical, running on windows XP service pac 2, double click Auto cad icon, autocad appears to be staring up then - bang.. the computer shuts down and begins a restart?
Any suggestions?
Thank you

[austenjonesufg]

I will suggest first to uninstall autocad and then install it again. lets see if the problem remains or not. moreover, let me know your computer configuration. and also let me know if all the drivers are upto date or not.