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HP Desktop - Possible Power Issue


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#1 ndonaldson2912

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Posted 18 August 2016 - 05:54 AM

Hi all,

My HP Desktop is acting strange all of a sudden. Whenever I press the power button the pc spools up for about 10 seconds, although no display or bios appears. After 10 seconds or so it shuts off and then after a further few seconds it starts again and the process repeats.

Any ideas to what this could be. Computer has been running fine. I have moved it from one room to another if that might have something to do with it.

Thanks in advance
ndonaldson2912

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#2 Chris Cosgrove

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Posted 18 August 2016 - 05:55 PM

As a first step disconnect it from the mains and press and hold the 'On' switch for 10 seconds or so just to discharge capacitors etc. Then take the side off and check everything for its connections. All the wiring connections obviously but also the RAM stick(s), video card and anything like that. Assuming you didn't actually drop it when you were moving it it is still possible that the jar of putting it down on a different surface shook an already iffy connection loose. This is on the basis of 'check the simple things first'.

 

Can you supply the model of this desktop ?  By now HP must have produced several hundred different models of computers.

 

Chris Cosgrove



#3 smax013

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Posted 19 August 2016 - 12:32 AM

By now HP must have produced several hundred different models of computers.


Potentially thousands. HP models tend to multiple like rabbits.

#4 ndonaldson2912

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Posted 24 August 2016 - 05:43 AM

Hi guys, still having the problem. Tried disconnecting mains and pressing the power button for 10 seconds. Same thing still happening. The PC is HP 600B series.

#5 ndonaldson2912

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Posted 24 August 2016 - 06:10 AM

Just to try and give you more info...tried disconnecting the hdd and disc drive with are connected via sata but the problem still persists. Also tried switching the ram around aswell. The power cable is something similar to that used for a laptop. Does not use the usual 3 pin power cable. The AC adapter is 90w. There are no beeps even happening when The pc is turned on

#6 smax013

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Posted 31 August 2016 - 05:57 PM

With this new information, my leading suspects would be the power adapter or the connector on the computer for the power adapter (which likely essentially means a problem with the motherboard for that kind of system) or some issue with the motherboard.

I don't have a good way to test any of that other than buying a new power adapter (if you can) or trying to find an authorized HP repair shop (or maybe just a generic repair shop if they are good).




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