how can i stop my computer from restarting automatically

[tirtha87]

my os is xp sp2 plz help......its urgent......

[Beta Waves]

Say something about your PC configuration and some details about your problem.

[MetalheadGautham]

Did you install some malware ? Is your computer over-heating ? Does the same problem presist when you booted into another OS ?

[afonofa]

tirtha87 had recently posted having problems with the desktop icons disappearing and reappearing and now(assuming its the same computer) the restarts. It might be a vundo infection and/or some more malware might have been downloaded to the comp. If its not a hardware problem(clean the ram maybe), post a HJT log, then try running VundoFix

But some more info, like an error message or something, would be helpful.

[ravi_9793]

First thing, scan your computer. Try using system in safe mode.
How To Do Effective System Scanning