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On Dell Optiplex 790 2 3 4 amber lights flashing on front of PC when trying to boot on.

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How to solve orange solid light on my dell GX520 when i boot it


Nana, A solid amber power button on your GX520, indicates a motherboard failure. The motherboard will need replaced. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Solid orange power button on Optiplex GX520
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Dell Optiplex GX520 amber solid light no power

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Power light is amber, and 3&4 leds flash,I replaced the ram but still have the problem, any Ideas what to try nect?


Hi


There are many reasons for this to happen on a dell, if you have replaced the ram, try disconnecting every thing else off the main board and try and boot again, also worth checking your ram to make sure its seated ok, if it boots when you have removed all devices like hard drives, cd drives, ect. plug them back in one at a time and see when it fails, this will reveal the faulty part. it could also be the power supply, and worse case the mainboard or CPU, its worth checking the CPU is seated firmly also

May 14, 2016 | Dell OptiPlex 790 USFF Desktop Computer-...

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My dell optiplex 790 desktop pc have a error code is 2-3-4 and some times 1-2 please i want help


Hello there
I have found two things which will help you.
A Technical Guide to the Optiplex 790 which will download from here:
http://www.dell.com/downloads/global/products/optix/en/optiplex-790-tech-guide.pdf
It is in pdf format and can be saved to your computer for future reference.
Also I found a Service Manual here:
Dell OptiPlex 990 Desktop Service Manual Page 76
If you click on the green download button at the top of the page then you will taken to a page where you enter 3 letters that are given to you and you can then opt to download it or view in your browser. In both cases it can be saved to your computer.
The latter has a good section on beep codes, and light codes on page 73 ( Chap 20) and following.
It gives your 2-3-4 as a possible USB failure, so try booting with no USB items attached - printer, flash drive, scanner, external drive etc.
It gives your 1-2 code as an expansion card failure and gives various means of checking.
Hope this is helpful, if so would you please register that with Fixya
Cheers

Jan 01, 2015 | Dell OptiPlex 790 DT 469-1606 Desktop PC...

1 Answer

Del 320 optiplex orange lite blinks won't boot up



For the Optiplex 320, a flashing amber light with no sound indication can mean 3 things.


1) Your power supply has failed

2) Your motherboard failed, most likely from a bad capacitor.

3) The front panel board (where the power button is located) is faulty or not connected properly.


I've worked with 10's of 1000's of Dell Optiplex's over the past 8 years and the flashing amber light is well known as a tell-tail sign of one of those three failure. Always start your trouble shoot with a PSU tester, then inspect the motherboard for domed or split/leaking capacitors...then on to the front panel which would require another panel and ribbon from the same model.

Jan 25, 2014 | Dell Optiplex GX280 (99301) Motherboard

1 Answer

My Dell optiplex 330 is not getting on only cpu's red light is flashing..


I am assuming you mean the power light is flashing, probably amber.

Here is a link that explains the codes.

http://support.dell.com/support/edocs/systems/op330/en/ug/tools.htm

A flashing amber light usually means there may be a power problem or an internal device malfunction. See the link.

Sep 23, 2011 | Dell OptiPlex 330 Desktop Desktop Computer...

1 Answer

Dell Optiplex 775 Power light, is flashing, wont turn on. I have recently replaced the PSU with a brand new dell one, as i was getting booting problems, since putting the new one in, i just get the...


could also be a ram stick that ate it. Also some of the older mother boards dont have a 12 volt supply that new cpu chips need might check that as well. Make sure the power supply is turning as well as cpu

Sep 03, 2011 | Dell Optiplex 755 Minitower Desktop...

1 Answer

Hello! I have a dell optiplex gx260 pc i am having a problem that my pc does not boot it does not show any screen nor any beep its backlight light orders are A OFF B Yellow C OFF D OFF i have...


If the power LED is flashing amber, there may be an issue with the power supply, if it is solid amber then the motherboard itself (or if it has an expansion card in a slot, maybe the card)

Jun 08, 2011 | Dell OptiPlex GX260 PC Desktop

1 Answer

TRY TO BOOT DELL OPTIPLEX 260 BUT NOTHING HAPPENS, JUST GET A FLASHING CURSOR IN TOP LEFT HAND CORNER OF SCREEN. DIAGNOSTIC LIGHTS ARE A,B,C GREEN AND D AMBER


The light code doesn't really help us much with this one. Its basically and 'other' for the light codes. Are you able to get into the BIOS? If so look to see if the hard drive shows up. If it does, there could be a software issue with the OS installation. If you can't get to the BIOS then you could try resetting the BIOS, or replacing the CMOS battery.

Jul 16, 2009 | Dell OptiPlex GX260 PC Desktop

2 Answers

Dell Dimension 5150 will not boot. Flashes amber light


I had the same issue with my Dell Dimension 5150 and I replaced the front I/O USB Audio Panel and it booted right up.

Feb 10, 2009 | Dell Dimension 5150 (DIM515MIN) PC Desktop

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