Having problems with your HP Pavilion a785c (82916061390) PC Desktop ?

Y computer will not start. I checked the power

\015 Y computer will not start. I checked the power source and it is fine. could it be the motherboard or could it be something else? What can I check before spending money on a new motherboard?\015

Answers :

First, check out the power supply. With the plug out (from the wall, the motherboard and anything else the power supply is connected to). Reconnect to either the hard drive or the CD/DVD. Take the big plug that went to the motherboard, insert a paper clip between pin 14 and ground. (pin 14 is a green wire, ground is any of the many black wires) Plug in the wall power cord. The fan in the power supply should spin normally. If it does, that tells us that the power supply is working. If not, your search may be over.
If the power supply is working, unplug from the wall and remove the paper clip jumper. Then, remove anything connected to the motherboard, CAREFULLY LABELING everything EXCEPT- - -the connection to the front panel switch. A couple of pictures may be a good idea. Reconnect the power plug to the motherboard and the little square plug (4 wires). Plug in the AC and push the switch. If the power supply fan does not turn, it is a safe bet that the motherboard is the problem. If it does turn on, shut it and start adding one item at a time to the board until the problem recurs. That will be the offending part. Ram may need to be added in pairs.
Make sure to unplug from the wall between each step.
Dear Sir,
\015\012According to Your problem.
\015\012Solution is here
\015\012By analysing your problem it seems to be problem with SMPS(Switch Mode Power Supply)it is the power supply part. I think your Computer SMPS is dead,so check with another brand new SMPS. I think it solves your problem. If it is not back with result and more information i will try to assist you in a better way
\015\012good luck
\015\012Fixya Customer support
Repair Help & Product Troubleshooting for HP Pavilion a785c (82916061390) PC Desktop

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