after few minutes or seconds its automatically shutdown. i already check the temp of the cpu 45C
what else should i do? can you help me to fix my problem thank you :)

Can you tell us what it is? We can assume it is a computer of some kind but it would be nice to know what kind. A response based on assumptions is likely to be completely wrong. If you want a meaningful answer you are going to have to be a bit more precise with the question.
Stuart
What tasks trigger the system to shutdown?
http://pcsupport.about.com/od/windo...
Report back if u see the bluescreen of death.45C for a CPU is OK.
List the complete system specs.You know the real meaning of peace only if you have been through the war.
