Question about Dell Optiplex GX280 (99301) Motherboard

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Black screen.High noise from cpu.fan

Hi.Same problem.GX280small form factor.Power on black screen.The heat sink fan sounds like a jet on takeoff.Push button on monitor and it gives"Power save mode,press any key or move mouse" but the usb ports seem dead.Power light just constant orange.Caps. look okay but no expert.Any solution would be most welcome..Thankyou..addboat

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Addboat,
I have wasted enough time in Dell community for exactly the same problem. Even a link mentioned by Move_n_man above, on 8 Oct. 09 refers to my posting in Dell community. Its nothing but a crashed bios and unfortunately theres none who could tell how to flush the bios and reload fresh bios in the bios chip when computer does not boot.
Dell is in no mood to help! So do the so called experts of the Dell community.
Sqn. Ldr. Raman K Jhanjee (Retd)

Posted on Oct 18, 2009

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You have bad caps on the mobo. Dell had a recall on the mobo's until 1/08 for just this reason. See Dell forum:
http://en.community.dell.com/forums/t/19253544.aspx
for more info.

Posted on Oct 08, 2009

Testimonial: "Thanking all for help.Company replaced faulty computer,,Thanks again ...addboat"

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Disconnect all devices from the power supply EXCEPT the motherboard
Remove any extra cards including video etc.(plug monitor into the onboard)

If you hear any beeps these can indictate where the fault is.
either of these sites below will help you further with that

Beep codes P
c

More beep codes

Power up the pc and see if the fans are working.
If not then double check the power connections to the board.

If you still have no fans it is time to suspect the power supply as the probable cause.

If the fans worked then you should have gotten a display which told you there was an error and offering you a chance to go into the BIOS. ignore it and shut down the PC.

Now connect one drive only and boot again.

Repeat that until you identify the component that is giving you a problem.

Once you find the problem then remove or disconnect and carry on with the rest to see if another component might also cause a problem

If there is only one problem device then you may want to investigate that device further, Unless you don't mind replacing it

Posted on Sep 23, 2009

Testimonial: "Thankyou very much for all your help.Company replacing unit,so happy days.Thanks again..."

  • Project NOMAD
    Project NOMAD Sep 23, 2009


    Your fan speeds up and slows down in response to temperature inside the computer. More so the CPU.

    I would suggest getting a can of compressed air made for computers

    take it outside, take of the side and blow all the gunk out of there, Really go to town around the fan (you might want to wear eye protection)
    While you are in there just check that the CPU cooler itself is not loose

    If it is it will have to be re-seated.

    If it needs re-seating don't just take it off and put it back on as that might make things worse with your temperature problem the have to be cleaned and new thermal grease put on

    I think this may be your problem before you buy a new CPU make sure you check the cooler assembly and make sure you use new thermal grease ($2-5)

    DON'T remove the CPU just the fan/cooler assembly.

    You must clean both the surfaces without scraping anything off. Use isopropynol alcohol and cotton bud sticks until both surfaces are clean, you can use your finger nail to scrape harder residue if you wish but nothing else.

    DON'T pour the alcohol over the CPU

    Now apply some new thermal grease (most computer shops have it)
    Be careful about how much you put on
    Here are
    some basic instructions

    Once you have re-assembled your cooler and re-connected it check everything is OK and power up the computer.

    If everything went to plan you should now be back in business

    Once you have re-assembled your cooler and re-connected it check everything is OK and power up the computer.

    If everything went to plan you should now be back in business

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You'll have to reseat cards inside the tower to determine what's going on. If you're not comfortable doing that the it's better if you consult a local computer tech.

Posted on Sep 23, 2009

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My computer was making loud noises, then shut down and won't restart. Could it be the fan went out?


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Hi.Same problem.GX280small form factor.Power on


Hi,

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Link to computer gate
Link2
Link 2 is to Geeks.com
Link 3 Take your pick
Your board supports Northwood/Williamette processors with HT
in 400/533/800 Front Side Bus

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