Pavilion Elite M9040N turns on or turns off continues

I have a Pavilion Elite M9040N media center desktop computer and it began to turn and turns off constantly.  The fans, the DVD player and the power that all light turns on for about 3-4 seconds then it turns off for 3-4 seconds, then starts the cycle again.  Does not get the bios start and nothing appears on the monitor.  I changed the power supply hoping that was the problem but no luck.

Anyone encountered this before?

Anyone know what is happening?

Thank you

John

Final update

Thus, the slot and off tension of the issue was due to a fault on the motherboard.  In order to get what they functional system once again I have had to replace the motherboard and video card (I don't know why, but this card is not as well).  I also replaced both of the hard drives, upgrade to the C: 1.5 TB drive and a D: 2 TB drive and power.  I bought a new copy of windows 7 64 bit and did a new install and updated all the drivers.  I was able to transfer all of our data, photos, music, etc. among the old readers on the nine with an external SATA cable.

I'm happy to be up and running again but in hindsight, I have pretty much rebuilt all of the computer.  I hope that this will last a few years.

Thanks for all your help and suggestings

Tags: HP Desktops

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