why my computer turn off itself

from the next time better have antivirus

 

It might be a virus. BTW, why don't you use firefox instead of IE?

 

My computer sometimes rebbot automatically because of automatic updates. I've turn them off and the problem was gone.

 

Such behavior is basically of virus or trojan.Try avg free or avast to get rid of it.

 

just format it i think this some virus from newbie virus creator (i write those kind of virus when i m newbie in virus creation )

 

Sounds like a virus. just follow me start>run>type msconfig> on general tab select diagnostic startup> OK> restart

Run antivirus or change a good one I recommend eset. If msconfig does not function the next step is way more complicated

 

yeah, re-install...if that doesn't work then it may be h/w problem

 

Since the problem has been remedied, for future reference for anyone experiencing such a problem, SmitFraudFix is a little program I have used before, in particular to get rid of SmitFraud, but it can fix a whole host of what is being called Desktop Hijack Malware. No guarantees, but it is a useful tool to try.

http://siri.urz.free.fr/Fix/SmitfraudFix_En.php

 

They might help you on defending your computer just subscribe for their free weekly newsletter. They will provide you with a good information about the most certified AV products that you can use on latest threats there is today. Try it out so that this won't happen to you again. Here is the site by the way
http://www.systemsecurityinstitute.org

 

I think your power supply is not supporting your mother board thats why you computer gets off. For IE I will suggest format your hard disk and install new window. May be your problem solved.