Error Lights Dell Optiplex 780
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reference guide to the OptiPlex Diagnostic Indicators Dell OptiPlex systems have a long history of built in diagnostic indicators. These can be audible beeps, power buttons that display different states and colours, specific diagnostics LEDs or a combination of them all, dell optiplex 780 diagnostic lights in order to indicate at which point during the Power On Self
Dell Optiplex 780 Error Codes
Test (POST) a system is having issues. The following article is a reference guide to the codes available on
Dell Optiplex 780 Error Lights 3 And 4
each model and what those codes actually mean. These change through the various models and years. These indicators are merely a starting point to narrow down any troubleshooting you will carry out
Dell Optiplex 780 Diagnostic Lights 2 And 4
to identify the cause of your current issue. You can use this as a starting point to narrow down the proper troubleshooting guide you will need or you can contact technical support for further help and they will be looking for these indicators as well. Table of Contents: Diagnostic LEDs for the OptiPlex series (Prior to 2005) Diagnostic LEDs for the OptiPlex Series (2005 dell optiplex 780 diagnostic lights 1 and 2 blinking to 2009) Diagnostic LEDs for the OptiPlex series (2009 to 2012) Diagnostic LEDs for the OptiPlex series (2012 to Present) OptiPlex Audible Beep Codes Note: For all the tables below, please remember that the diagnostic LEDs only serve as an indicator of the progress through the POST process. These LEDs do not indicate the problem that caused the POST routine to stop. Note: Please be aware that if your system completes POST without stopping on a particular error code and then gives a black screen, the most likely reason is that you are experiencing a No Boot issue and not a No POST issue at all. Back to Top 1. Diagnostic LEDs for the OptiPlex series (Prior to 2005) This series of systems had a block of A, B, C, D LEDs on the back of the chassis that lit up in Green and Amber. I've included a table below with what these indicated. These models were readily identifiable by the rounded fronts and clamshell assembly. Note : Please click on the title of the section you want to open below, in order to see the contents. Show a
Gaming Smartphones Tablets Windows 8 PSUs Android Your question Get the answer Tom's Hardware>Forum>Computer Brands>Optiplex 780 will not boot: 1 & 3 lights blinking & Power Button Blinking Amber> Optiplex 780 will not boot: 1 & 3 lights blinking & Power Button Blinking Amber Tags: Optiplex dell optiplex 780 error codes 134 Systems Power Computers Dell Last response: 14 June 2016 11:47 in Computer Brands Share Willybak 5 dell optiplex 790 diagnostic lights 1 and 2 November 2013 23:20:31 Dell Optiplex 780 mini tower. Computer was working okay yesterday, no changes were made or work done on the box. Walked dell optiplex diagnostic lights into the office this morning and saw: Computer seemed to be powering/shutting down in intervals of about 1 second. I pulled the power cord and plugged back in. Attempted to power up the box without success. The power button http://www.dell.com/support/article/us/en/04/SLN284978/en flashing Amber and lights 1 & 3 are flashing. Performed the following: Pulled the power supply from working 780 in installed in this box. Result: No Change - same symptoms. Pulled RAM from working 780 and installed in this box. Result: No change - same symptoms. Reviewing the manual diagnostic codes (lights only since box will not post). Manual points to RAM. But, as I mentioned, this computer was working fine with no changes made to RAM prior to http://www.tomshardware.com/answers/id-1870150/optiplex-780-boot-lights-blinking-power-button-blinking-amber.html issue. And, since I tested with known good working RAM from another 780, a memory issues is not suspected. Please help with any suggestions or ideas. willybak@GMail Dot Com More about : optiplex 780 boot lights blinking power button blinking amber Reply to Willybak C12Friedman 6 November 2013 13:15:42 I'm going to suggest replacing the CMOS battery on the motherboard here as a first step or at least checking that it's at 3v. I can't explain how or why it is but, that battery going bad can cause quite a few strange issues Reply to C12Friedman m 0 l derizor 16 December 2013 22:03:43 Just fixed the same issue by replacing power supply unit. Reply to derizor m 0 l Related resources Optiplex 780 will not boot: 1 & 3 lights blinking & Power Button Blinking Amber - Forum Dell optiplex 620- blinking amber power button, fan on, solid amber aux light on motherboard- no boot - Forum Dell XPS 400 wont boot blinking amber power light and diagnostic light 1 only - Forum Dell optiplex 990 power button steady orange light, and 2 3 4 blinking - Forum .dell desktop power button solid amber and the green light under the power button solid.green, not blinking. the fan inside ca - Forum Can't find your answer ? Ask ! Get the answer Akif Sheikh 6 November 2014 22:59:12 So I can't turn on my Optiplex 7
Gaming Smartphones Tablets Windows 8 PSUs Android Your question Get the answer Tom's Hardware>Forum>Systems>Dell Optiplex 780 Won't Boot> Solved Dell Optiplex 780 Won't Boot Tags: Optiplex Boot Dell Components Last response: 30 September 2015 01:38 in http://www.tomshardware.com/answers/id-2805396/dell-optiplex-780-boot.html Systems Share Hawes 21 September 2015 21:05:04 I have a Dell Optiplex 780 that won't boot. When I try to boot it up, a flashing amber light blinks over and over along with lights 1 and 3 turned on and it will display nothing on my monitors. I also unplugged all external devices and I had no luck, same thing. When I opened it up to see what dell optiplex was happening, no activity except for a solid amber light next to the motherboard. I looked it up and saw on most of the posts people were saying it was a PSU problem, and that once they replaced the PSU it worked like a charm. I am wondering if I should go out and get a PSU to see if that helps it, or wait for support to figure dell optiplex 780 it out for me since I still have my PC under warranty? More about : dell optiplex 780 boot Kisianik 22 September 2015 05:38:18 Hawes said:I have a Dell Optiplex 780 that won't boot. When I try to boot it up, a flashing amber light blinks over and over along with lights 1 and 3 turned on and it will display nothing on my monitors. I also unplugged all external devices and I had no luck, same thing. When I opened it up to see what was happening, no activity except for a solid amber light next to the motherboard. I looked it up and saw on most of the posts people were saying it was a PSU problem, and that once they replaced the PSU it worked like a charm. I am wondering if I should go out and get a PSU to see if that helps it, or wait for support to figure it out for me since I still have my PC under warranty? Explanation of you diagnostic lights Quote:A possible system board, power supply, or peripheral failure has occurred. 1. Power off computer, leaving the computer plugged in. Press and hold the power supply test button on the rear of