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My pc had no power - Computers & Internet

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Replace the computers power supply unit

Posted on Sep 13, 2010


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First to be check is your power cord and the line. If it's ok, then check the power supply.Power is indicated by a fan at the back of your CPU case. If there's no fan activity, power supply is busted. Replace power supply. If the power supply is good, there should be a beep sound indicating that the motherboard is good. If there's none, isolate the board by removing all devices (hard disk, cards, memory, etc) just to see if the motherboard is working right. Power on again, if there's a beep, you may reinstall the rest of the devices you removed.

Posted on Sep 13, 2010

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Will not power up.


Check cable first rats might be the culprit then replace power supply.

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Dell 8400 desktop won't power up


How to fix PC Power problem




How to fix PC Power problem





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PC Power problem:







  1. When your pc power problem you should check/change power cable.





  1. If no problem cable. Check/change power supply.


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  3. Power supply is ok. Then check your motherboard crystal. If the crystal damage change the crystal.

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Storm knocked power off late yesterday afternoon....back on this morning. PC won't power up....small green light on back flashing. Modem, router, etc. all back up and running, but PC won't turn...


Hello,
The first thing to try is to cycle the power. To do this, unplug the power cord from the back of the PC and press and hold down the power button on the PC for 5 seconds. This will completely drain any "stuck" power in the components. Now plug the power back into the PC and try booting. If it still does not come back on after this, then you may be dealing with a blown power supply. You can buy replacement power supplies from your local PC shop for about $50 for a 400watt.
To protect your devices in the future, make sure you have a good surge protector and / or a UPS (uninterrupted power supply).
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How can i reboot my PC without keyboard?


Hi,

Here are some of the steps to you can reboot your pc without using a keyboard:

1) Long press the power button
- Press the power button for about 3-5 seconds. If the power LED or power supply fan shuts off, that means you have successfully turn off your pc. Press it again to turn on.

2) Unplug the power cord from the power supply
- Force your pc to shutdown by unplugging the power cord from the power supply of your pc. Put it back again and press power button to turn on.

Note: Please make sure you have saved important activities before doing this as this will immediately turn off your pc.

Hope it helps.

Thanks!

Feb 22, 2011 | Computers & Internet

1 Answer

GOT NO IMAGE , JUST BLACK


check the connectors to ur moniitor...from PC box...
also do this....
power off the machine
switch off power supply/remove power cable from wall outlet.....remove the power cables...from PC power slot.......keep pressing the power on button in the PC for 3-4 mins....WITHOUT POWER....and/or
press the PC switch on button and release it after few seconds many times.....
Power in RAM is locked...and it's locked ur Windows DLL files....

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Hp Pavilion getting no power after relocating pc.


the Power transformer has diferent outputs, +5V,-5V,3V,12V and so on.., but has a standby output a low power 5v to power button function.
Your PC have Power supply Defective,
so your must find a usual spare power supply on the market, compatibilty as 115V input and more of 350W power, to have stabilty.

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Won't power up-- suppply OK


So basically you cannot get the pc to POST. Meaning you have just a black screen when you power on the pc, right?

First off, did you attempt to update BIOS before this happened. 90% of the time this is caused by a corrupt bios.

If you did not try to update BIOS before the problem started then try these troubleshooting steps.

1. Full power down. Unplug the power cord from the Power supply. Then hold down the pc power button.
Try to boot the pc.

2. Open the case and reseat the graphics card, hard drive, and RAM.

3. Take out one of the RAM sticks if there is 2 or more. Swap the RAM sticks in different RAM slots.

4. Set the Cmos jumper to clear. Power up the pc. Power down the PC. Set the Cmos jumper back to normal position, power up the PC.

5. Unplug and replug all the power supply cables.

6. Check the powersupply function. Either by a powersupply voltage checker, put the powersupply in a different pc, or try a different powersupply in the problem computer.

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PC won't start up


Check for power on the A/C outlet. Maybe the circuit breakers were tripped. If there is power, then the power supply installed on the computer might be surged. Replace power supply if thats the case. Normally, there's a button that says 'power' or an image of a lightbulb... you need not use the remote.

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