pc restarts after its been on for about a minute

does anyone here know what to do if your pc just turns off without any notice and restarts itself without giving you any errors. this happens approximetely about a minute after I start it up or starts itself up after the shutdown. it doesnt matter what i do during this minute it will turn off anyway even if i dont login.

this is what it says in the bios about the temperature
cpu temperature 53C/125F
cpu fan speed 4687rmp
system fan speed 2033
one thing that Ive noticed is that it doesnt turn off when im in bios only in windows it also turns off if i dont type in my password after the same amount of time.

do you guys think its a virus

 

system restore did the trick
but still no clue what was the problem

 

hi antonio,
i have the same problem.
could ou explain better how you solved it?
thank you.
ale

 

I had this same problem where as soon as I booted up my computer it would turn off. It would do this every time I started it up. Mine was cause by a virus I got when connecting to a network in an Airport (unsecured network) once I system restored it was fixed.
Solution: Use System restore....