PC not rebooting

Hi ALL,

Need your brain here.......
I have a PC ,it is running well for like 4 years until
recently that it
does not want to power up.There story is :

The problem is after the PC turned on and started rebooting
for 25-30
seconds,the PC suddenly switched off by itself.We redo this
process
until it can turned on and rebooting itself and everything
went
well.Therefore we leave it like that.

Just yesterday,the same problem exist and it only switched
on for 1
second before it switched off again but unlucky for us,we
tried to do
switched on couple times and it did not go to the stage of
rebooting
,it only goes till rebooting for 1 second and switched off
again.

Is it the problem with my PC is the POWER SUPPLY or
MOTHERBOARD or some
other parts,please do let me know as this is URGENT !!

Thanks guys....


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I'd say try replacing the power supply first. If that
doesn't work,
it's definitely the motherboard. You should have gotten it
checked out
when you first started having problems, though.


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