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05-28-2017 07:05 PM
05-29-2017 02:15 AM
Is your PC out of warranty? Contact HP if your PC is in warranty.
An unresponsive PC could have many causes. Failing components can vary from the external power supply to any component on the motherboard. Your PC is similar to a Laptop/Notebook. When one internal component fails you must replace the motherboard.
Have a local tech look at the system if your PC is not in warranty.
Diagnosing this problem is probably, not possible in a forum.