Question about Dell OptiPlex Computers & Internet

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Why dell optiplex 780 its blinking orange light and 2,3,4?

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Frederick Buabeng wants more answers to this question
to the Hjackers the answers Is in your service manual
no better manuals exist by any other PC makers,
Dell is GOLD ! in the documented world. a fact. (HP 2nd best)
you must be talking about the main CASE POST code LED stip? that is 4 LED wide strip that LED?
1,2.3,4 code, those are POST error codes covered in the manual fully. and beep codes.
page 15 (of 80) shows, 2,3,4 is USB port failure

https://www.dell.com/support/home/us/en/19/product-support/product/optiplex-780/manuals

there they are books,
learn to read them find answers, if the Answers make no sense to you ask here, a tech knows what they mean.
or ask a shop to fix it.
there are your 2 choices.
if USB device shorts out or has battery inside (cell phone)
connected to the PC and shorts you just will get that code.
the cure is remove the USB device that is defective.

Posted on Mar 07, 2019

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Please see picture below

why dell optiplex 780 its blinking orange light an - 26252022-mlivnxu5ipt5lsprkzk1wjv2-2-0.jpg

Posted on Aug 04, 2016

  • Anonymous Mar 16, 2019

    hyjackers to 3 year old posts
    read your manual at dell.com
    read the page on error codes, its all there.
    my guess is the OP 3 years ago inserted a bad USB device into his USB slot and it failed. (endless USB devices possible I can not guess) so remove it. is the answer,
    reboot with no USB devices, then try them 1 at a time, BINGO?

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6ya6ya

6ya staff

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SOURCE:

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Posted on Jan 02, 2017

Anonymous

  • 1 Answer

SOURCE: Dell Optiplex gx280 shuts down and orange power light blinks

It happens because the power supply is overheats and computer goes to standby. The power supply is 160w or lower. Specially it will happen if you put more devices in such as video card or sound card. So the only solution you have is to place a small 1or2 fans toward the power supply to make it cooler. And 1 more thing the power for the fans should come from other sources.

Posted on Dec 29, 2008

Anonymous

  • 1 Answer

SOURCE: Orange light on Dell GX270 power button

I agree, the Optiplex GX270 is infamous for MoBos going bad. The capacitors have a manufacturing flaw, and up until February of 2008, Dell was replacing those boards for customers for free if it was found that the capacitors were the culprit. I just found a board yesterday with this problem. A sign that the capacitors are bad is either a buldge or they will be leaking an orange-rusted looking substance (primarily capacitors near the CPU). Symptoms of this problem include the PC rebooting itself randomly, and/or getting a BIOS error saying there was a thermal event.

Posted on Oct 14, 2008

Anonymous

  • 150 Answers

SOURCE: Dell (ie optiplex 330) would not boot with the orange light on

Do you have a lot of accessories plugged in? They may have overloaded the power supply and if this is the case you will need to buy new power supplies. If this is not the problem, check to make sure that the computers have plenty of ventilation in the back. If they don't, they may have overheated and melted quite a few different components.

Posted on Feb 27, 2009

Anynick

  • 23 Answers

SOURCE: my dell optiplex 330 can not switch on, whan I put

If you are getting an amber light flashing, your power supply is faulty.

If it is a solid amber light, you motherboard is faulty or one of the componants are faulty.

I would suggest giving Dell a call. They would beable to pin point the problem and give you a quote. Some of their componants are non standard and can only be purchased from them.

You could try reseating all your componants on the last resort but it is unlikly to help.

Posted on Jun 26, 2009

IQUIT

  • 3940 Answers

SOURCE: i get orange light on

http://www.fixya.com/support/r4282412-find_no_post_diagnostic_information_dell

Flashing Amber, bad power supply

Solid Amber either a bad component connected to motherboard of the motherboard itself has failed

Posted on Jun 23, 2010

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1 Answer

Why is dell optiplex 780 lights 1 & 3 ok and power button amber?


An Amber blinking power button indicates a low voltage problem. This can be caused by a defective power supply or a defective motherboard.
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.

Apr 28, 2014 | Dell OptiPlex 780 MT Desktop Computer...

1 Answer

Front penal 1 and 2 green lights blinging


You WILL get blinking lights. It is either disk activity .. the computer is doing something (even if you are not using it..) ..

If your computer works fine, then all is fine. Lights on computers ... show when it is powering up, loading/downloading .. active. Normal..

Do you have an actual problem?

Jan 03, 2014 | Dell OptiPlex 780 MT Desktop Computer...

1 Answer

No1 and no2 green lights are blinking


check the www.dell.com for solution also check the user manual on their site!

Jan 03, 2014 | Dell OptiPlex 780 MT Desktop Computer...

1 Answer

Have optiplex 780, On start up the diagonistic


You could try unconnecting the USB hardware and then start the computer. But, with Dell you will most likely need to have the keyboard plugged in. Then if the computer starts, you can fit each item until it stops. But, the Dell USB controller is renowned for being weak. You may need a USB PCI card to continue using the computer, they are a lot cheaper than a replacement motherboard or a new computer.

Sep 05, 2013 | Dell OptiPlex 780 Desktop Computer 1 x...

1 Answer

Error codes


Go to Dell Support > Optiplex 780 Desktop PC > Manuals & Documentation > Dell Optiplex 780 Service Manual,

http://www.dell.com/support/troubleshooting/us/en/19/Product/optiplex-780

Diagnostics > Diagnostic Lights,

"Problem Description - A possible expansion card failure has occurred"

"Suggested Resolution -
1) Determine if a conflict exists by removing an expansion card (Not a graphics card) and restarting the computer.

2) If the problem persists, reinstall the card you removed, then remove a different card and restart the computer"

Be SURE to follow Anti-Static Procedures.

Regards,
joecoolvette

May 13, 2013 | Dell OptiPlex 780 PC Desktop

2 Answers

Is there an SD card slot on the Dell OPTIPLEX 780?


There is no card reader on most models of the Optiplex 780. There may be a card reader on the SFF unit. The MT, desktop and USFF do not include a card reader. You can add a 3.5" internal card reader to the MT or desktop models for under $20. You could use an external USB card reader with any Optiplex 780.

I hope this helps.

Cindy Wells

Apr 01, 2013 | Dell OptiPlex 780 MT Desktop Computer...

1 Answer

My Dell Optiplex 745 Desktop PC Power light orange blinking how can i solved it..


Hello,
The orange blinking on your desktop power button says that there's a problem with either the power supply or the motherboard itself.
Please refer to this link for the diagnostic lights on dell computers.
What you can do is: 1. unplug the power cord 2. press the power button, hold on it for more than 5 secs 3. re-plug the power cord on your CPU 4. test if it the system will work.
If this troubleshooting step does not help, that means it is more likely that the problem is with the motherboard.
Hope this helps!

Sep 14, 2011 | Dell OptiPlex GX270 PC Desktop

3 Answers

Dell optiplex 330 flashing orange on the power botton


Try to clean the RAM and place it again in the motherboard.

May 31, 2010 | Dell OptiPlex 330 Desktop Desktop Computer...

2 Answers

Optiplex light blinks, fan goes for a second but won't turn on


you may want to do a search on the dell website, i had that problem and never fixed it, you might find the information under service manuals search.
good luck.

Aug 11, 2009 | Dell Optiplex GX270

2 Answers

Problem power supply dell optiplex 740 blinking orange light only


hi,
this is probably a no power/nopost problem here is a helpfull link
http://tinyurl.com/d4t55m

further queries are welcome
if you think my solution was helpfull please do rate me

Mar 28, 2009 | Dell Optiplex 740 Desktop Desktop Computer...

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