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I was switching around my power supply and once i hooked all the cords to my motherboard and such all the feedback i got once i pressed the power on was a single blink on the power LED light ... the 24 pin cable once i press it nearly all the way in my fans power up but once i press it completely in and turn the power on it only blinks once and doesnt do anything PLEASE HELP im in college and i really need to get my homework done its a priority!!!

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  • pablosinche Mar 30, 2009

    i loose the power in the computer..when i opened, i tried to verified if the wires was tighten but i disconected and i forgot the right position...there are thre pair of cord one H.D.D LED, other is POWER SW, and the third one is POWER LED. Can you help me?... the computer model is emachines T6520

  • Michael Lucas
    Michael Lucas May 11, 2010

    Is the other power supply new.... If not it could be bad!


    Also make sure you are trying to plug the main connector in backwards... Sounds silly but I've seen it done. Match the lock on the side of the connector with the clasp on the motherboard socket.

    If neither is the issue let me know.


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Your not getting power
did you loosen the power button wires from the motherboard

Posted on Jan 17, 2009

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1 Answer

Keeps shutting itself off


Hello there and welcome to fixya
There may be a few things that can cause this problem.
I you feel comfortable opening up the computer case and looking around great if not have a friend or a computer repair shop do these repairs.
First i would unplug the power then open the case and remove the power supply cords that go to the motherboard this will help release any static that may be produced next find the battery and remove it
once this has been done press and hold the power button for at least 5 seconds this will release any built up power on the board
now see ifthere is any lint or debris around the fan units if so get them clean blocked fans are the leading cause of motherboard failure because it overheats due to the lack of air suppliedd to the board ok?
Now once this has been done find the memory sticks and remove them 1 at a time and make sure they look to be in good shape and not corroded if so great make sure there is no lint in this area too then replace them and now check any cables or ribbon cords from the cd drive or the a drive or any other drive that may be attached
to the board now once this is done replace the battery and replace the power supply cords back on the motherboard
and any thing else that you have disconnected then plug the computer back in and now try it you will be brought to the time and date screen which is normal simply set the time and date ok
Please let me know how this works for you and if you need any thing else please feel free to post me a comment
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Aug 19, 2012 | Dell Dimension 4600C PC Desktop

1 Answer

No power to my desktop computer HP A1330N and no green light in the back of the power supply


You replaced power supply and your made sure you plugged everything back into the motherboard snuggly and in it's proper place? If so it might be your motherboard is bad.

Make sure you have the new power supply turned on. Sometimes there's a O/I switch on the back of the power supply. Flip it and try to boot and see what happens. You might have another bad power supply.
If so your motherboard might be burning them out.

Try removing the power cord for 30 seconds and press and hold the power button. After 30 seconds put the power cord back in and press the power button to see what happens.

Do your fans work when you press the power button? Do you hear any fans running?

Mar 23, 2012 | Computers & Internet

1 Answer

Acer x3400 wont start up


Remove the Power Cord and then press and hold the power button for 30 seconds. After 30 seconds plug the power cord back in and press the power button. If it reboots you had a Static Charge Buildup and released it by holding the power button for 30 seconds.

When you press the power button do you hear the fan running, disk drives running, cd drive clicks once, anything on the lcd screen? If not I would think your Power Supply is bad and needs to be replaced.

It's either the Power Supply or Motherboard.

Mar 23, 2012 | Acer Aspire X3400 PC Desktop

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Came home to find it off, tried to power up, fan runs 3 seconds, no power light, then off


Try first to unplug the power cord at the back of the CPU then press the power button for 5 seconds while the power cord is unplug. This will clear the remain power from the capacitors on the power supply. Once done, re-connect the power and try to power the computer back on.

If still not, then this is a power supply issue. What you can do is to open the case, make sure power cord is not connected and you have done the above step again to ensure that there is no electric current remaining. Once done, trace the connection from the power supply connecting to the motherboard and unplug it. Please check for the lock clipping it from the motherboard. once removed, again press the power button for 3 seconds. Then reconnect everything and power the computer back on.

If still not, then this is really a power supply issue and it should be replaced.

Thanks,
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Aug 09, 2011 | eMachines ET1641-02w (PT.NA60X.001) PC...

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Dell Dimension 5100c Model: DCCY will not boot.


Hi,

Is the power button a steady abmber light?

If so follow the instruction below>>>>

Remove the power cord from the back of the computer. Then open the side casing of the tower and unplug the 24 pin block connector from the motherboard. The 24 pin block connector looks like this >>>>>

0b6066f.jpg


Once removed press the on/off button on the computer to dispel and residual power from the motherboard.
Then connect the block connector again and put the side panel back on and then plug the power cord back in and try to boot the computer up.

If its still the same then the power supply inside the computer may need replacing.


Good luck.

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Gateway computer 310 series wont power up when


It sounds to me like the power switch is plugged into the motherboard incorrectly. I would need to know the type of motherboard you have to get you the proper schematic for hooking up the power switch and reset switch to the board. If you have the manual to the motherboard, there should be a detailed picture showing you how it is to be hooked up. Please let me know the motherboard model for further assistance.

Good Luck,

NOLA Tech

Jan 29, 2010 | Gateway 310 S PC Desktop

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My dell e310 will not turn on


Check the power cord make shure both ends are not loose. Check the switch on the back of the tower. If the computer is pluged in to a power strip check the surge protector most have lighted switch and a reset button. If no power at the wall outlet check that a wall switch doesn't control it and is on. Check circut breaker Or fuse pannel.
Hope This Helps
Please leave feedback

Nov 16, 2009 | Dell Dimension E310 PC Desktop

1 Answer

My hp pavilion a336n will not turn on. When I plug the power cord in the light on the back of the hard drive will turn on, but when I press the power button nothing happens... any suggestions?


To resolve this issue you may need to open the chassis (the computer cabinet). You can call HP specialized support for help but they charge you for the support. You can call them at 866-211-5207.

OR - Follow the given steps.

Perform the following steps, in order, until power is restored or it is determined that there is a hardware failure: CAUTION: This product contains components that are easily damaged by ElectroStatic Discharge (ESD). To reduce the chance of ESD damage, work over a non-carpeted floor, use a static dissipative work surface (like a conductive foam pad), and wear an ESD wrist strap that is connected to a grounded surface, like the metal frame of a PC.
  1. Disconnect everything from the computer, including the power cord.
  2. With the power cord disconnected , press the power button on the front of the computer for five seconds. Plug in the power cord and test to see if the computer can turn on. If not, continue using these steps. NOTE: If the power supply fan makes an inconsistent grinding sound or stops and starts erratically, replace the power supply
  3. With the power cord removed, flip the red voltage selector switch to the opposite position. Wait about five seconds, and then switch the red voltage selector switch back to its original location. Ensure that the voltage selector switch is on the correct setting, 115V for North America. Performing this step ensures that the voltage switch is engaged and set correctly for your country/region. Figure 4: Voltage selector switchc00517964.jpg Plug in the power cord and test to see if the computer can turn on. If not, continue using these steps.
  4. Plug a lamp into the same outlet to see if the wall outlet has power. Try the computer in a different outlet in order to eliminate the outlet as a possible source of the issue. Test both to see if the wall outlets have power.
  5. Remove all extension cords, power strips, surge protectors and any converters that remove ground. Plug the power cable directly to the wall outlet. Test for power. If this fixes the issue, find the device that is causing the issue and do not use it. NOTE: If you find the device that was causing the problem was a surge protector, resetting a breaker or fuse on the surge protector may fix the issue.
  6. Remove all attached devices except for keyboard, mouse, and monitor.
  7. Remove any internal component that was recently added, such as video card, memory, CD, DVD, and hard drives. An added device may take more power than the power supply is rated for. If the problem goes away when the component is removed, the only option is to upgrade the power supply to power supply with a higher wattage rating.
  8. Check the power switch:
    1. With the power cord disconnected, press the power button on the front of the PC. The button should release easily and not stick in the socket.
      • If the button sticks, it should be replaced or serviced.
      • If the power button does not stick and appears to be functioning, continue using these steps.
    2. With the power cord disconnected, remove the case or side panel.
    3. Follow the wires from the power button on the front of the computer to their connection on the motherboard.
    4. Look at the power switch cables connected to the motherboard. If the cable has become disconnected, connect the power switch cable connector to the connector on the motherboard. Figure 5: Power switch connector on Motherboardc00517968.jpg
    5. Replace the side panel, plug in the power cord and test to see if the computer can turn on. If not, continue using these steps.
  9. Find the defective part:
    1. With the power cord disconnected, remove the case or side panel.
    2. Disconnect all power cable connectors from their connectors on the motherboard and from the back of internal devices (the back of drives). Make sure to label or remember where each cable connects for future reference. Figure 6: Example of common power connectionsc00540428.jpg
    3. Replace the side panel, plug in the power cord, and examine the light on the back of the power supply:
      • If the LED is on solid and is not flashing, the power supply is probably good and the problem is most likely caused by a defective component (processor, memory, PCI card) or a defective motherboard. Have the computer serviced, or remove the components and replace them, one at a time, to find and replace the defective component.
      • If the LED is still flashing (it should not flash with all connectors removed), plug the power cable into a different power outlet that is known to be good. If the LED still flashes, the power supply should be replaced.
      • If the LED light is now off, plug the power cable into a different power outlet that is known to be good. If the LED stays off, the power supply should be replaced.
      NOTE: If an electrical storm or power surge has recently occurred, then it is more likely that the power supply, the modem, or motherboard is damaged and requires replacement.

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1 Answer

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look for a switch on the back of the computer by the power supply it must be in the I position not the O . if that will not work then the motherboard my be damaged or the power supply itself not the cord for it is very rare for a power cord to polarize any more. last the power button itself may be damaged but in al my years I have not found a bad power button yet. Always it has been the motherboard or the power supply.

May 08, 2008 | E-Machines eMachines Desktop PC

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