PC keeps shutting down for no reason

[H5555]

my HP computer windows 7 keeps shutting down randomly

 

[jrayx]

It's on the wrong section. Probably Your PSU is dying, buy a power supply from Corsair, Seasonic or Antec.

Check temps with HWMonitor, it might be overheating.

 

[ss202sl]

There's a reason. You may not know it, but there's always a reason. I agree with anonymous1 - check your temps

 

[popatim]

+1 - theres always a reason...
Check temps & logs.