Question about Dell OptiPlex GX280 PC Desktop

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Dell GX280 I Have the exact same problem with my GX280 Dell. High speed fan and no boot-up. Did you ever find the problem with yours?

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  • edwardo_1010 Dec 05, 2008

    Some Dell amd 64

    Same High speed fans lights 3 and 4 are solid , no signals to moniter...but confirms connection to pc...

  • joe5286 Jan 02, 2009

    Got it to boot once, system froze after about 20 minutes. Shut it down (holding the power button), attempted to reboot and got the high speed fan and amber power light. Pulled off the heatsink and fan, removed the old thermal paste and applied new paste. System running cooler, but still won't even post.

  • esrarazvi Mar 17, 2009

    Solution posted by Glen Little is a temp fix. I did worked for me couple of times but No guarantees.

    Its good till you find a replacement MOBO.

  • Mark Burnett Mar 17, 2009

    My GX280 will not post either. Fan goes into hyperdrive and no signal to monitor. Tried removing memory and booting, then adding back just one card but still no signal to monitor and super fast fan. Any other ideas on this?

  • lionusman200 Mar 31, 2009

    I have Optiplex GX 280

    My computer give yellow light and fan start slows and then speed up with time

    My e mail adresss is

    Pls mail me the solutin

  • Anonymous Apr 10, 2009

    Boots fine 80% of the time then screen goes black and it goes dark on the network then the fan goes into hyper drive and I have to unplug it and the other 20% it foes not get to the OS loading screen at all it just revs the fan up to full speed



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Same problem... orange power light, fan starts slow and builds up to very high speed.
I removed my video card and SIMMs --> it beeped on boot and the fan did not speed up.
Put one SIMM back in --> booted fine, pressed F2 to view BIOS. Memory reported fine.
Put all SIMMs back in --> all fine now.

Posted on Mar 17, 2009

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Diag Lights 3,4 indicate memory Failure (this could however be a motherboard or Power supply issue) see the manual on


1 - test memory - running on a single stick of memory and moving the memory around.

2 - test Power supply - swap with a known good PSU if possible

3 - Check for bulging capasitors on the motherboard (seems to be relatively common on these boards)

Hope this helps

Posted on Jan 05, 2009

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Well i had a similar problem...on the internet i found the solution...put a half inch piece of rubber on the fan hood and press and close computer works fine although fand does speed occassionally...This is only for the SFO type of GS280

Posted on Jun 15, 2010

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I have dell optiplex gx280 computer.i am facing problem of CPU high fan speed when i turn on the goes to full noise like a jet fighter and nothing get appeared on the screen and fan continuously gone...

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Apply pressure on the heat sink fan right before you press the power button and continue applying pressure. Watch your screen if you see it boot this means its a problem with your processor clamp that applies pressure to the processor. Try to remove the top part of the clamp. Shouldn't be too hard with some needle nose pliers. Then just replace the heat sink and fan with out that clamp.  

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Optiplex gx280 won't boot and cpu fan goes faster

Sounds like a bad motherboard, I try resetting the bios , removing everything but the video , could be a bad power supply too (if you have one jump the wires in there as a test). you can buy those dell MBs cheap on fleabay.

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Dell GX280 High Speed Fan and No Display.

i had same problem today and i tested my machine and solved the problem at last.
the problem is the thermal value that your mainboard sets for your cpu.
please replace the mb.
ps: before this process,i tried almost everything . cpu fan , memory , cpu , cables ,case ... everything. but the problem is on your mb.

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Go here and download this program.

This program will control your fan speed based on your cpu temp. It's main use is to quiet fan noise.

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I just repaired two Gateway systems with similar behavior (turn on power, fan runs at full speed, no boot), and both needed replacement system boards. (These were a different model, but the symptoms are typical of a dead system board.) I got the boards from a company called Blue Raven Technology (

Before deciding the main board is bad, try another power supply to make sure that's not the problem. Also you might try clearing the CMOS memory on the system board (either by moving a jumper usually found near the backup battery, or by removing the battery itself). Sometimes corrupted CMOS data will keep the system from booting.

Nov 16, 2008 | Dell OptiPlex GX280 PC Desktop

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