Dell Optiplex 755 Error Lights 1 2 3
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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, in order to indicate at which point during the Power On Self Test
Dell Optiplex 790 Diagnostic Lights 1 And 2
(POST) a system is having issues. The following article is a reference guide to the dell optiplex 790 diagnostic lights 1 and 2 amber codes available on each model and what those codes actually mean. These change through the various models and years. These indicators are dell optiplex 3010 diagnostic lights 1 and 2 merely a starting point to narrow down any troubleshooting you will carry out 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 https://www.manualslib.com/manual/356816/Dell-Optiplex-755.html?page=347 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 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 http://www.dell.com/support/article/us/en/04/SLN284978/en 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 all | Hide all Diagnostic LEDs CPU configuration activity or failure; CPU Cache failure LED Pattern State Name State Description Suggested Resolution No Pattern Visible Off System POST complete - LED time-out has occurred If the LEDs came on and then went off, look at troubleshooting the display and the operating system. If the LEDs never came on at any point then look into a power issue. ABCD RCM BIOS checksum
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