Random Reboots.

Just installed SP2 and now i randomly reboot, any way i can tell whats causing this?

go here: housecall.trendmicro.com and scan for viruses. My computer did that to me and it turned out to be virus. Good Luck with it

Try running Event Viewer (in order to access the error logs, and check for any critical errors)...Start | Run | Type eventvwr.msc and click OK | Highlight "Application" and "System" independently in the LH pane | Right click any error message(s) (critical errors are in Red), and select "Properties" | Write down a couple of the latest critical error messages exactly as they appear (under the "Description" field), and post them in this thread.

Also, open the System Information tool by typing msinfo32 in the Run box | Expand "Components" | Highlight "Problem Devices", and look for any problems that might be listed there.