Computer Shuts down

Well your processor may be damaged..

dont worry may be it is not damaged so what do you do is that open the cover of your computer.... Then start it and keep the cover opened making sure that you can see the processor fan running...

See that if the processor fan is running...
then with the help of a torch see that may be the fan is being restricted or it is moving slowly.

this slowness of the fan heats up the processor and makes it shut down you PC

if the is running slowly take out the fan using the user guide of the processor and then lubricate it with motor oil.

it IT Does not work then there is a problem with your processor so please check by placeing another supportive processor and check it!