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I went to start hp 864n and nothing happened. I unpluged the unit and plugged it back in and hit the powere button and it started up. I had to do this a few times this week and now it will not power up at all. There is a green light on the power supply but the unit will not power up.

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Hp pavilion slimline power supply


you bringing a marginal part or connection back up a working state. when it cools or voltage drops it goes to the non working state. hp power supplies are not good to begin with. replacing it will fix it till that one also fails

May 23, 2017 | Computers & Internet

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I have a HP G60-235DX, It was working fine yesterday. Today I hit the on button and nothing happens. The indicator by the a/c adapter is on. I changed the on switch, but still nothing.


If your computer is plugged in and charging, unplug it and then press the power button, then plug it back in. If that doesn't work, remove the battery, then pop it back in and do as i said above.

Hope that helps.

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I have an HP Media Center PC 864n. My PC wont power on! I turned on my PC, did a few things, and I left for about an hour. When I came back my PC was off. I tried to turn my PC back on, but it wouldn't...


try to unplug it fromt he back of your pc and open the side of your case and unplug the 2 or 3 onnectors going fromthe power supply and wait 10 or so minutes amnd plug them back in and see if that changes it if it powers back on that meant it has shut off either due to a short circuit and the system killed power to protect the system from damage or the system has overheated

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1 Answer

Nothing happens when push start button. power cord etc good ??? is this a power unit failure?


make sure the outlet is recieving power

unplug the tower from the outlet & then replug it in & see what happens

make sure all cords are plugged in correctly in the back of the tower

then if nothing happens after you push the start button, power supply & cord could be bad

the same thing happened to my daughter's pc & had to replace power supply & shorted out the motherboard

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2 Answers

What does an E2 code mean? I have a Haier Dehumidifier that is about a year old, I emtied the bucket and put the bucket back into place and hit the start button and nothing happen I unplugged the unit and...


What does an E2 code mean?

I have a Haier Dehumidifier that is about a year old, I emtied the bucket and put the bucket back into place and hit the start button and nothing happen I unplugged the unit and error code E2 keeps comming on


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1 Answer

I had a power failure and tried to restart computer will not start and light on back keeps blinking


Well lets hope nothing fried, What i would recommend to try is to unplug the power chord from the back of the computer and hold in the power button for about 30 Seconds to remove all the power from the board. Then plug the power chord back in and hit the power button and see if the computer starts. Let me know if this works for you. Thanks

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2 Answers

Hav a pavilion a510n HP , the cpu will not start up, there is a green light on the back of the cpu flashing when it has power but when pushing the start button it will not start, monitor has power but...


I had a similar problem. Moved a 4-year-old desktop. Got the flashing light and no start. Quick fix is to unplug unit, open up case and unplug the large power connector on the motherboard. (On mine this is marked P1 and has a lock tab on one side that must be held in while unplugging.) Plug the 110-volt power and THEN plug the connector back into the motherboard. Button the case back up and all will be well until the next time you shut the power off to the computer.

The cause of this problem is likely that the battery on the motherboard is nearly dead. The flashing light is a warning to replace the battery. (It would have been nice if they would have put this into the user manual.) When you disconnect the power as described above, you interrupt the low-battery circuit. Replace the battery and all should be well.

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1 Answer

Machine Unresponsive


HP Support:
Try resetting the unit by unplugging the unit while its on, then holding on the # and 6 keys plug the power back in an continue to hold the # and 6. The printer will power itself down, the reset is complete; turn it back on using the power button and attempt a copy.
If the unit has never been able to make a copy, it is likely that unit is defective.

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1 Answer

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I have the same problem. The only way to get the TV to come on is to unplug it, but once you get it back on it turns itself off again in a few minutes.

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