Question about Dell OptiPlex 760 PC Desktop

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When dell optiplex 760 pc turned on the power button keep in amber light. cpu fan was spinning but no video come out rom the screen. Aux power led in motherboard was lighted amber.

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Rmove the memory from the slot and clean it with a neat cloth and insert and switch on the computer if still not working remove the processor heat sink and clean it with a cloth apply some thin layer of heatsink solvent and fix them tightly also remove the cmos battery from the motherboard and switch on the computer then shutdown the computer and replace camos battery

Posted on Dec 30, 2010

  • Imtiaz Masih
    Imtiaz Masih Jan 10, 2014

    Thanks, I removed CMOS battery and put the same one back, now my PC is working. Thanks again for this sugession.

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Dell OptiPlex GX520 PC Desktop won't power on


An Amber blinking power button indicates a low voltage problem. This can be caused by a defective power supply or a defective motherboard. Just to make sure that nothing else is causing the problem, remove any PCI cards like modem, video card, sound card, etc... Remove the memory modules and disconnect cables to CD/DVD drives. Look at the USB ports to see if any are damaged.

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Gx270 tower mother board amber LED solid on


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We have around 30 units of DELL Optiplex GX280 having mother board failure. It was more then 3 years old already. Once the turbo fan become noisy then it will gone dead.


May be serious. See if the power light goes amber after power up. I had (have - still siting in my basement) one that did same. Power up, fans sound like 747 taking off. Power light goes and stays amber. This is USUALLY caused by bad capacitors on the mother board. Known GX280 problem going back. If you look on the motherboard, the capacitors should have flat tops and not leaking. If the are rounded or leaking, the MB has probably gone bad.

I obviously can not be 100% sure about this as the unit is not here.

You can google "gx280 solid amber light loud fan" and see the issues. Here is one such link.

http://en.community.dell.com/support-forums/desktop/f/3514/p/19253544/19414291.aspx

Feb 16, 2011 | Dell OptiPlex 330 Desktop Desktop Computer...

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Buzzing noise on boot up, about four buzzes. Monitor stays black, power light on machine stays on, and green, but nothing comes on the screen. Led on motherboard is orange.


The first thing to check would be the CMOS to see if there is a setting for "case intrusion" or something to that effect. Some computers have sensor that goes off the computer's side panel is opened. I believe this can be disabled in the CMOS and/or it's just a wire connected to the motherboard that can be disconnected.

It could also be an important fan, like the CPU fan, isn't spinning fast enough which may or may not lead to an over-heated CPU.

Also check to be sure all the memory sticks are firmly seated.

If it doesn't look like any of those it could always the the power supply. See if you can borrow one for a little while for testing purposes just to see if it works.

If none of those pan out I would say call Dell support and see what they say.

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760 continue to log me off while in idle mode. Have check setting in Power Option but system continue. Please help....


Do check for CPU fan spinning fast or Sound from the same when in Idle mode, it is a known issue. Please contact Dell Tech support @ 1-800-822-8965

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Dell GX270 won't boot up with solid amber light on Power button


Check motherboard for bad capacitors. I had the same problem and when i had bad capacitors replaced everything is ok.

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Dell OptiPlex GX520 PC Desktop Problem


An Amber blinking power button indicates a low or missing voltage problem. This can be caused by a defective power supply or a defective motherboard. Just to make sure that nothing else is causing the problem, remove any PCI cards like modem, video card, sound card, etc... Remove the memory modules and disconnect cables to CD/DVD drives. Look at the USB ports to see if any are damaged.


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