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01-11-2012 08:39 AM
What model of PC do you have?
What operating system?
Did you make any changes to the PC prior to this issue occuring (changes such as installing new software or adding new hardware)?
01-11-2012 08:50 AM
Do you know what specific Pavilion model number it is (such as a1310y)?
Do you know what your son was doing on the PC before he left it?
Have you tried shutting it down and then turning it back on? You can force the PC to shut down by pressing and holding down the power button for about 5 seconds.
01-11-2012 09:21 AM - last edited on 04-26-2017 03:46 PM by Omar-E
Hmmm...it sounds like something is going on with the hard drive. You'll need to see if your PC is recognizing the hard drive and if not, you may want to open the PC and unplug then replug in the cables to the hard drive.
Try the steps in this HP support document on troubleshooting startup issues:
https://support.hp.com/us-en/document/c05336130 (Link Updated 04/26/2017)
Let us know how it goes.