Question about Dell Dimension 4400 Power Supply ** FREE ** (DE4400300WB) Power Supply

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Dell 4400 won't power up Flea light works

Dell 4400 won't power up, Flea light works
battey ok
all possible cables and memory repluged
CPU replaced.
passive yellow main switch lights, no green
capicitors all look ok
PSU benched tested ok. ??

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  • Brian Lee May 11, 2010

    laptop or Desktop? For a lap top you can unplug the batteries and power cord. Then press and hold the power button. This is called a power-drain. If that does not work, take out the RAM, hard drive, and optical drive and do the power drain again. still not working, check the ram. Try one stick at a time in different slots.

  • Dick
    Dick May 11, 2010

    Next thing to try is replacing the memory one stick at a time. You could also have a bad motherboard.

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For non-BIOS issues:

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 (this discharges any residual power in the capacitors).

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. Try one stick at a time to see if you can get the PC to boot. If this works, then the remaining ram sticks are damaged.

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 (20-25 dollars at local PC shop), get the supply tested at a PC shop (usually a free service), put the powersupply in a different pc, or try a different powersupply in the problem computer.

If the Powersupply checks out ok, then you will have to do a process of elimination to find out what part or parts are the culprit of the No-Boot.

Start by pulling all the ram sticks if you have not already. This is the easiest components to check and usually a culprit.

Take out one of the RAM sticks if there is 2 or more. Swap the RAM sticks in different RAM slots. Try one stick at a time to see if you can get the PC to boot. If this works, then the remaining ram sticks are damaged.

If it is not the RAM, you have to continue removing items such as sound cards, un-plugging hard drives and optical drives, other PCI cards. Do this one at a time until you find the culprit. If a POST screen, meaning you can see Anything from the PC brand name to Motherboard brand name appearing on the screen. The PC may not boot to windows, but it Does post at this point, and with that the problem is resolved. If windows does not load, then you have a new problem. Best dealt with asking a new question.

Good luck!
Brian

Posted on Jul 06, 2009

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1 Answer

Dimension 4400 won't boot and the Flea light is amber


Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect/ boot up a computer hard drive

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

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Also check that cable from cpu power switch connected properly to motherbord power on/off pin.
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Did any one open the system, after which you are facing this problem?
If the 4 pin power connector is disconnected, you will face the same symptom.

This symptom can also appear if you have any external or internal devices electronically failed / Short circuited. Remove any external devices even external hard drive, flash memory devices, camera, printers etc and then restart the computer.

There is also a possibility of flea power, remove the power cable from the tower and press and hold the power button for 10 seconds, this will drain charge from the capacitors from the motherboard.
then connect the power cable and test if your issue is fixed.

if the issue is still not resolved, then we have to remove any internal devices, eg, add on sound card, video card, modem etc and then try powering up, if the issue persists there could be a problem with either the motherboard or power supply, which needs parts to be replaced and tested.

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inside the pc there should be a green light. called flea light. if its not on.. then id say motherboard or power supply are bad.
take power cord off. and hold power button down for 10 ecs. then reconnect and retry. i think its abad psu.

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Remove the CD Drive from the computer , disconnect the charger from the computer , flip the laptop and remove the battey, with the battery disconnected , push the power button for 10 secs to release the flea power , open the memory slot , remove both the memory sticks and then put back only one of the memory stick and then try restarting your computer. If it gives out the msg amount of memory changed , then Strike F1 to continue...

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