Question about Dell Dimension 2400 PC Desktop

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MTC2 2400 Series Desktop

Computer won't turn on. Have checked cords, power source and all is OK. Pulled plugs from outlet, waited 60 seconds and tried again. Nothing works. No power

Norm Forde
calypso2@verizon.net

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  • calypso2 Jan 03, 2009

    I cannot see any light of any kind on or near the power cord.

  • calypso2 Jan 04, 2009

    I checked again inside the cabinet and a green light is on. Still unable to turn on computer. All cords have been double checked and surge protecters bypassed just in case.

    What do you think?

  • maplestkid May 11, 2010

    Have you checked on the back of the computer where the power supply connects to the wall and seen if it has a green light?

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Had a similar problem, If PSU light is on and still no power its most likely the PSU is gone. More specific the main plug wiring to the system board.

Posted on Jun 19, 2009

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If therte is a switch on the back of your pc on the power supply check to maske sure it is switched on. if that all checks out try directly connecting the cable to the wall socket if your arnt already doing that. if that doesnt workout check to see of your surge protector if you have one and see if the switch is on. if all those options fail you are going to have to go into the pc case. check the cpu power cables. they are a 4 pin connector in a square shape usually and placed next to a big fan wit a heat sink on the mother board. give that a riggle and push to make sure it is connected. plug the power back in and see if it works. if the problem still isnt solved you can if you know how too check your power button connection on the motherboard and give it a little riggle. if that all still fails then i think your power supply is no good.

Posted on Jan 03, 2009

  • aidan wilson Jan 05, 2009

    well like i said if you know how to open up th side of your pc (when it is off) and give all the power cables a quick wriggle and see if that fixes the problem.

    sometimes connections get a little corrosion or dust and it can either not get enough power to its target or completely block connections. if that doesnt work reply back

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Perform the following steps, in order, until power is restored or it is determined that there is a hardware failure:
NOTE: If the Power Supply fan spins when the PC is turned on but the light does not come on, it is possible the LED is defective. If this is the case, use the section Power supply light comes on or flashes .
1. Disconnect everything from the PC, including the power cord.
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3. Replace the power cord with another power cord, like the one used by the monitor.
Test to see if the computer can turn on. If not, continue using these steps.
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9. Use a vacuum cleaner to remove the build-up of dust from the power supply fan vent holes. Make sure that the PC is turned off and that the power cord is plugged into a grounded outlet. Only use the end of the vacuum hose near the outside of the fan entrance.
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  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
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  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.
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    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 Motherboard c00517968.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.

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