According to the Service Manual, 2,1 = System board failure Reboot and start tapping F12 when you see the Dell splash screen. When the F12 menu opens, look for the option to run diagnostics and run all of them, including RAM and extended drive tests. Copy error code, if any. Since it's not blinking this morning and PC booted ok, it might have been a 1-off issue, meaning the diagnostics won't find anything. You will just have to keep an eye on it for a while to see if the blink code re-appears. Some things to consider: Do you use a surge protector or power strip that might be failing? Power supply failing? Overheating? When did you get this PC and does motherboard battery need replacing? RAM module(s) and/or PCI-e card(s) need to be re-seated in their slots? Loose motherboard cable connector? Is PC still under warranty? Answer from RoHe on dell.com
Dell
dell.com › dell community › desktops › optiplex desktops
Power turned on after long amber light blinking 2-1, 2-1,...... | DELL Technologies
July 30, 2020 - I have this pc dell 9020 small form factor, At everytime I try to turn on, there is amber light blinking 2-1, then I remove the power plug and hold the power button for 15-20 sec , then I connect it again and it worked.
Dell
dell.com › support › kbdoc › en-us › 000126021 › a-reference-guide-to-the-dell-optiplex-diagnostic-indicators
A Reference Guide to the Dell OptiPlex Diagnostic Indicators | Dell US
Using a blink and color shift pattern to indicate where it has a problem. NOTE: If you have an OptiPlex All In One (AIO) Computer, use the reference tables below. NOTE: To see the contents of a section, click the heading to expand that section, or show all to expand all the sections. ... NOTE: On any OptiPlex built since 2012 (that is, 7010/9010/9010 AIO), Dell has stopped using all beep codes except for the Memory Failure code.
Power outage. Now power button flashes 2 and 1 orange.
Bad MBD - Rows A, G, H, and J from table 12.4 of SIO Spec - Pre-Post indicators [40] Looks like a motherboard failure \#Iwork4Dell More on reddit.com
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May 15, 2025XPS 8930, boots and runs, amber light blinking 2,1
Last night I noticed that the power light was blinking amber and it seemed to be a code 2 then 1. The computer seemed to be operating normally. After I shut down the light continued to blink. I don... More on dell.com
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September 21, 2020Dell Optiplex 9020 , Power Button Giving 2,1 Blinking Amber light - PC Builds, Modding & Overclocking - TechEnclave
Hi All, Needes help I have a Dell Optiplex 9020, which is giving 2,1 Amber light on Power button and does not start easily. Once It starts then you run it for hours it works fine with no issues, the blinks keep happening. Looked.up the error code online and also tried to find few fix and workaround ... More on techenclave.com
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July 27, 20242 amber lights and 1 white light
Hi Community,I am reaching out to seek your expertise regarding a recurring issue with my Dell laptop. Recently, I have noticed the following problems: When I attempt to power on the laptop, the&nb... More on dell.com
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October 29, 2024Videos
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Dell Optiplex 9010 | Amber Light Blinking 2-1
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Dell
dell.com › dell community › laptops › laptops wiki
Fix Dell Laptop LED Blink Code 2 Amber, 4 White (Memory Error) | DELL Technologies
March 31, 2026 - Dell LED blink codes use a two-group ... the recommended actions for any other pattern (e.g., 2,3 = no memory detected, 2,1 = CPU error)....
Dell
dell.com › support › kbdoc › en-us › 000124349 › understanding-beep-codes-on-a-dell-desktop-pc
Understanding Beep Codes on a Dell Desktops | Dell US
NOTE: Starting from the D4 generation of OptiPlex models onwards (that is 7010/9010/9010 AIO), the beep codes are eliminated, replaced by a single memory error pattern. Now only no memory failure conditions generate the beep code, the beep pattern is 1-3-2 (one beep, then three beeps, then two beeps).
Reddit
reddit.com › r/dell › power outage. now power button flashes 2 and 1 orange.
Power outage. Now power button flashes 2 and 1 orange. : r/Dell
May 15, 2025 - Remove CMOS battery and push the power button a couple of times to de-energize capacitors. Let it sit for 30 mins for any residual charges to drain. Then try powering it back on without battery and any peripherals. If you're lucky, it might post or return an error code other than cursed 2-1.
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According to the Service Manual, 2,1 = System board failure Reboot and start tapping F12 when you see the Dell splash screen. When the F12 menu opens, look for the option to run diagnostics and run all of them, including RAM and extended drive tests. Copy error code, if any. Since it's not blinking this morning and PC booted ok, it might have been a 1-off issue, meaning the diagnostics won't find anything. You will just have to keep an eye on it for a while to see if the blink code re-appears. Some things to consider: Do you use a surge protector or power strip that might be failing? Power supply failing? Overheating? When did you get this PC and does motherboard battery need replacing? RAM module(s) and/or PCI-e card(s) need to be re-seated in their slots? Loose motherboard cable connector? Is PC still under warranty?
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Thanks for the ideas. I run the Support Assist almost every night and without ever getting any messages except updates. I will to the diagnostic test but I don't think anything will pop up since it is running perfectly today. I will check the connections and pay attention to the fan. I think it is possible that it overheated. Thanks again
TechEnclave
techenclave.com › hardware & gaming › pc builds, modding & overclocking
Dell Optiplex 9020 , Power Button Giving 2,1 Blinking Amber light - PC Builds, Modding & Overclocking - TechEnclave
July 27, 2024 - Hi All, Needes help I have a Dell Optiplex 9020, which is giving 2,1 Amber light on Power button and does not start easily. Once It starts then you run it for hours it works fine with no issues, the blinks keep happenin…
Dell
dell.com › dell community › laptops › inspiron
2 amber lights and 1 white light | DELL Technologies
October 29, 2024 - From what you describe and the LED code, most likely, I would expect to replace the motherboard. Dell Inspiron 3593 Motherboards | OEM Replacements · See this video for additional no post troubleshooting. ... Unplug battery. Wait 5 sec. Hold Power button on laptop for 30+ seconds. Release Power button. Press Power. ... Hello, I had a similar problem with a BIOS update recommended by the DELL website. After the failure, the notebook displayed the LED pattern: 1 white, 2 amber (orange).
Dell
dell.com › support › kbdoc › en-us › 000146184 › diagnostic-error-code-standardization-for-2015-2016-notebook-and-tablet-systems
Diagnostic Error Code Standardization For 2015 & 2016 Laptop and Tablet Systems | Dell US
This article provides information about diagnostic error codes for 2015 and 2016 laptops or tablets with Skylake, Kaby Lake, Purley, and Cherry Trail chipsets.
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@Rick0167 I'm glad you got it working. Bad batteries have thrown error codes before that are either off-track or erroneous and have nothing to do with anything.
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Thanks for the help and replies Found the date/year (Oct 2018) stamped into the chassis. Will pick up a battery in the next day or two and try resetting the CMOS, hopefully its not the motherboard. The only other things I can think of is I did have some problems with this PC when trying to install a M.2 SSD. See https://www.dell.com/community/en/conversations/optiplex-desktops/help-think-i-broke-my-computer/647fa20ef4ccf8a8de7716f8 If memory serves me right there was a little spacer that goes between the M.2 SSD and the motherboard that was missing so I used a small brass nut of the same size to act as a spacer before fastening the SSD to the motherboard. Maybe this could be causing the error code?
Iss
iss-kb.iss.k12.nc.us › books › windows-devices › page › dell-diagnostic-led-blink-codes
Dell Diagnostic LED Blink Codes
Each LED blink takes 1.5 seconds. The system will not shutdown when displaying the Diagnostic Error Codes. Diagnostic Error Codes will always supersede any other use of the LED. For instance, on laptops, battery codes for Low Battery or Battery Failure situations will not be displayed when Diagnostic Error Codes are being displayed. For diagnostics pattern 2-amber, 8-white connect an external monitor to isolate between system board or graphics controller failure.
Dell
dell.com › support › kbdoc › en-us › 000135030 › a-reference-guide-to-the-precision-mobile-diagnostic-indicators
A Reference Guide to the Precision Mobile Diagnostic Indicators | Dell US
Note: Amber LED blinking pattern: The Power Button LED shall blink the corresponding LED codes for the corresponding fault condition. The repeated pattern has a long pause inserted in the middle. Example: No Memory is detected. The Power Button LED blinks two times followed by a pause, blinks two times, pause, and so on.
Dell
dell.com › support › kbdoc › en-us › 000141206 › a-reference-guide-to-the-xps-notebook-diagnostic-indicators
A Reference Guide to the XPS Laptop Diagnostic Indicators | Dell US
First Group: The Battery LED blinks in Amber up to nine times then pauses for 1.5 seconds before running the second group. Second Group: The Battery LED blinks in White up to nine times then pauses for 3 seconds before running the first group again. For example: No Memory is detected (2, ...
Dell
dell.com › support › kbdoc › en-us › 000153002 › a-reference-guide-to-the-precision-workstation-diagnostic-indicators
A Reference Guide to the Precision Workstation Diagnostic Indicators | Dell US
Instead the Power Button state now gives a blink and color shift pattern to indicate where it had a problem. Identify these desktops by the fact that there is no Diagnostics LED block on the front of the unit. With this series, the Diagnostic LEDs changed to include a combination of the Power button LED state and the diagnostic LED indicators. The Diagnostic LEDs remain 1, 2, 3, 4, and placed on the front of the unit.
Dell
dell.com › dell community › laptops › laptops wiki
Dell Diagnostic Light Patterns and Beep Codes: How to Identify and Fix Hardware Issues | DELL Technologies
September 15, 2025 - The number and sequence of flashes or beeps correspond to a specific code you can look up in the respective Dell diagnostics table. ... Go to the page corresponding to your model (links provided below). Use the glossary to go directly to your device’s section (often organized by release year). Here you’ll find information on the location of diagnostic LEDs and the tables you can use to identify the meaning of their patterns. Here’s an example of a diagnostic light table, where 2 amber flashes followed by 3 white flashes indicate “No Memory/RAM detected”:
Dell
dell.com › support › manuals › en-us › dell-pro-pc14250-laptop › dell-pro-14-pc14250-owners-manual › system-diagnostic-lights
Dell Pro 14 PC14250 Owner's Manual | Dell US
The following table shows different Service LED blinking patterns and associated problems. The diagnostic light codes consist of a two-digit number, and the digits are separated by a comma. The number stands for a blinking pattern; the first digit shows the number of blinks in amber color, and the second digit shows the number of blinks in white color.
Dell
dell.com › dell community › desktops › optiplex desktops
Memory error, 2 then 7 amber blinks | DELL Technologies
August 22, 2023 - Hi, I have a SFF Optiplex 5040 that is not posting and the power button is blinks amber 2 times followed by a pause and then 7 blinks. It also turns on as soon as I plug the power cable in and won’t shut off by holding the power button in. I can see this is a memory error from the troubleshooting for this model, which stacks up as the problem started when I removed the 1 4GB Ram stick it had.
Dell
dell.com › dell community › laptops › laptops wiki
LCD Failure Troubleshooting: 2 Amber, 7 White Blinking LED | DELL Technologies
March 19, 2025 - March 19th, 2025 17:35 · Original Discussion: Inspiron 7559, LCD failure, 2 amber, 7 white blinking LED · What Does This Code Mean? The LED pattern 2 amber, 7 white indicates an LCD failure.
Dell
dell.com › support › manuals › en-ca › optiplex-7040-sff › opti7040_sff_om › diagnostic-and-power-led-codes
OptiPlex 7040 - Small Form Factor Owner's Manual | Dell Canada
Example 2,3 = 2 amber blinks, short pause, 3 amber blinks followed by long pause then repeats. WARNING:The power LED 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 ...
Dell
dell.com › support › manuals › en-us › optiplex-7070-ultra › optiplex_7070_ultra_sm › diagnostic-led
Diagnostic LED - Dell OptiPlex 7070 Ultra Service Manual
Each LED blink takes 1.5 s. The system will not shut down when displaying the Diagnostic Error Codes. Diagnostic Error Codes will always supersede any other use of the LED. NOTE:For diagnostics pattern 2-amber, 8-white connects an external monitor to isolate between system board or graphics ...