HP Paviloin Desktop screen blanks

[haigjohnson]

Hello,
I'm running Windows 7. 5 to 10 minutes after powering on the screen blanks and the keyboard goes dead. I have switched out the power supply.
Any Ideas?

 

[o1die]

Check your power settings in windows control panel. Any recent changes to your system? Did you buy it new or used?

 

[haigjohnson]

I bought it new form HP. No power settings cahnges. And I restored back to the previous setting before that last security update.

Thanks for your help