Why my computer go off within 5 minutes after start?? it is frequent?

Soon after my computer start functionig it shut off within 5 minutes, it repeats, how to set it right??
Why my computer go off within 5 minutes after start?? it is frequent?
If this happens without any error messages, it is overheating or has a RAM memory problems.


Unplug the computer from the power. Open up the case and carefully clean it (vacuum cleaner from a few inches away is useful, don't let it touch anything). Then turn it back on to see if the FAN on the cpu is working. If not, it needs replacing.





While the machine is OFF and UNPLUGGED, check the RAM chips (log sticks with little chips on them, standing up) to make sure they are tight and solid in their sockets.
Why my computer go off within 5 minutes after start?? it is frequent?
this occurs due to heating problems. either the smps fan is down , or the processor fan, or just right now you have covered the cabinet with a cover, or removed the AC from room(if you had), or I THINK THIS IS THE FIRST TIME YOU ARE RUNNING YOUR NEW COMP IN SUMMER.