Why won't my peripherals work?

Hewlett-packard / Kj378aa-aba a6430f
April 22, 2017 at 18:31:25
Specs: Windows 7 Home Premium, 2.1 GHz / 3.00 GB
I moved and took my desktop down. It was shut down for 2 years. Now when I try to set it all back up the tower comes on but no matter what I plug into it, they won't work. It is like it doesn't recognize them. Nothing will start, not even the monitor. Anyone have any ideas on what it could be?

Tammy


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#1
April 22, 2017 at 18:58:26
Any beeps from "the tower" or lights blinking? Fans running?
Have you checked if anything came loose inside the box during the move?
2 years idlle may have drained the coin-battery on the motherboard. Suggest to change it, although it should not block the system from starting up.

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#2
April 22, 2017 at 21:09:34
After you change the motherboard battery you need to reset the BIOS to defaults or Optimal Settings if available, then go back in and manually set as needed CPU, memory, time, date, primary graphics (onboard/PCIe), boot devices, and boot order.

You have to be a little bit crazy to keep you from going insane.


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#3
April 23, 2017 at 05:28:45
Electrolytic capacitors can "dry out" when unused. Leave it powered up for a while - there is a vague chance that this can reform them.

Always pop back and let us know the outcome - thanks


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#4
April 23, 2017 at 17:35:07
Thank you all very much for responding. I will get back with you as soon as I try these fixes to see if they work.

Tammy


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#5
April 24, 2017 at 06:26:01
Moving the tower may have jarred something loose. Open the case and re-seat each cable, card, memory module, and cable, one by one. Snap the memory modules in and out 4 or 5 times each to burnish the contacts.

Be sure you are connecting the monitor to the correct plug.


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#6
April 24, 2017 at 07:37:17
I would suspect the power supply, if you can either borrow a PSU from someone and try that, or test your PSU with a multimeter - I would have suggested looking in BIOS but as you cannot see the screen use a meter to test all the various rails.

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#7
April 28, 2017 at 14:39:21
Ok, I tried everything except resetting the BIOS. My dad checked everything with a little meter thing and the power supply is fine, the memory has been taken out and reseated, all cables have been removed and plugged back in, the battery has been replaced. The motherboard will not start up. everything has power but none starting the motherboard. Please help. and also I do not know how to reset the BIOS. But thank you everyone for your time to help me.

Tammy


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#8
April 28, 2017 at 16:28:34
If you can't get the monitor to work it is hard to say what else is working or not working (unless you know something different). Do you never ever see anything at all on it?

You can't reset BIOS as per #2 if you can't see anything on the monitor to select the settings.

The monitor should be showing "No signal" if the computer itself is not working. If not it could be a monitor fault. Try someone else's on your computer or yours on theirs.

Otherwise it could be the motherboard itself has failed, the CPU, or the display card. If the display card is a separate board then you could take that in and out a few times which will clean its edge connectors (although a soft pencil eraser is better). Same goes for RAM, especially the pencil eraser on its edge connectors. SATA HD connectors can also give trouble (both power and signal).

Always pop back and let us know the outcome - thanks

message edited by Derek


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#9
April 28, 2017 at 19:03:12
I'm having the same problem. Can someone help me? Thanks!
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#10
April 28, 2017 at 20:10:31
Frances_Roy

You have jumped in on someone else's thread which can cause confusion. No two problems are ever quite alike and neither are the fixes. Please raise a new thread of your own which will immediately appear at the top of the pile and therefore attract current helpers. That way we will also get the details of your computer rather than someone else's.

Thanks

message edited by Derek


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#11
April 29, 2017 at 00:02:35
Do you hear any beeps when you turn it on?

If the power supply has an external 115/230 switch make sure it's in the correct position. DON'T GUESS and if it needs to be changed do so only with the power cord removed.

Otherwise, as already mentioned, something must have happened to it when you 'took it down'--either jarring something loose or zapping it with static.


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