My computer have some sudden shutdown problem

[vicky_singh20]

Hello,
i have system which has intel core 2 due proccer and MSI motherboard 2GB RAM and graphic carg nvidia GT X 9oo series.
i have some problem with my pc
that get suddenly shutdown by it's own.

without warning after unexpected shutdown it won't boot up when i unplug and do some thing to boot up and it take's time to wait for a while.

then my pc get start how to I fix it this prob.....

 

[o1die]

You may have a loose heatsink or fan that has stopped turning somewhere in your system, including the power supply. I would start by changing the ps if you don't find any other issues.

 

[jsc]

agree. The first thing I would check is the power supply.