3 Posts
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51873
Dell OptiPlex - Solid amber light, lights 2,3,4 blinking
Hi,
I have ALL external connections (except power and monitor), HD and memory disconnected. Power on comes up blank monitor screen, no beeps , amber power light, blinking 234. During power on, fan starts slowly and within 2 or so seconds on full blast and it stays that way. Power supply has green light. ram battery is good (3.3V). Looking for thoughts. Motherboard LED is on.
Thanks
Tom
toml1948
3 Posts
1
December 26th, 2019 14:00
My solution was to replace the motherboard. No idea how to reflash the bios if, indeed, that was the problem.
donm4599x
478 Posts
0
August 12th, 2019 14:00
toml1948
3 Posts
0
August 12th, 2019 15:00
Thanks for the info. It doesn't appear to be usb-related. Is there any way to fix a corrupt BIOS?
speedstep
9 Legend
9 Legend
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47K Posts
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August 12th, 2019 15:00
A 2-3-4 LED error codes point to system BIOS corruption or a USB short circuit error.
DELL-Cares
Moderator
Moderator
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25.7K Posts
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December 18th, 2019 20:00
Hi LKsaawin, was there any recent BIOS/ software updates on the system? Please private message us the service tag of the system so that we can check on the system warranty.
Regards,
Akshatha
LKsaswin
1 Message
0
December 18th, 2019 20:00
i have same issue facing
TylerAlb
1 Message
1
December 25th, 2019 15:00
Hello,
I have a Dell OptiPlex 990 as well with the same problem. Diag lights 2, 3 & 4 are flashing and the power light is solid amber. What are the chances 2 machines doing this in the same week? Mine just rebooted watching TV on it. And on reboot I had the error lights flashing. I have pulled all hardware that was installed one at a time and still the same results. If it's the BIOS, I installed A24 several months ago. Could it be a recent update from the Dell Support Assistant or Windows update? I am running Windows 10 PRO.
Thanks,
Tyler
DELL-Cares
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25.7K Posts
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December 26th, 2019 11:00
Hi TylerAlb,
We have contacted you on private message requesting to share the requested details, for us to review and assist you accordingly. Please share it with us at your convenience.
Regards,
Paventhan M
Imaheadout
2 Posts
0
January 8th, 2020 08:00
I've just had the same issue with my 990, 234 flashing amber and solid amber power led. Was there any resolution other than replacing the motherboard?
Seem odd that a few of us have had the same issue at a similar time. Makes me think it was update related. I can't remember what version bios I was on. Haven't updated it for a few years. It's quite possible windows did an update overnight before mine broke but I have no way of knowing
I've tried resetting/clearing the cmos and just about everything else.
speedstep
9 Legend
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47K Posts
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January 8th, 2020 11:00
https://www.dell.com/support/article/us/en/04/sln284978/a-reference-guide-to-the-dell-optiplex-diagnostic-indicators?lang=en#2012_to_Present
Power Button LED State Description
Imaheadout
2 Posts
0
January 9th, 2020 02:00
Thanks, I'm aware the lights point to a corrupt bios being the likely cause. Do you have any idea how this could be fixed? I have already tried a CMOS reset, both with the jumper and by removing the battery.
Bman3
1 Message
0
February 29th, 2020 10:00
I too am having the same problem on my 990 full tower. Computer turns on, PSU shows green light, system fan and cpu fan go full blast, no video, blinking 2/3/4 on the LED status lights.
This happened within the past few weeks, just like everyone else on this thread. I think it's more than just a coincidence at this point. Is it possible a Windows update did this?
It would be great to find a fix to this somehow. Pointing out the error to us is great and all, but simply saying "corrupt bios" does nothing to help us.
donm4599x
478 Posts
0
February 29th, 2020 12:00
Indeed. One can read the meager dell documentation for themselves. No need for a parrot
I can't really help you (I'm not an expert dell musician), but I doubt it's a windows update problem if you were unable to even boot into windows. If you could, you would have indicated that.
If the bios is borked, there isn't a recovery option on older machines that I know of.
There could be an electrical fault on the motherboard.
Unless a musician returns and plays a new guitar riff, I would replace the machine.
Csongor
1 Message
0
January 21st, 2024 10:59
Hi,
I have the same issue with my Optiplex 760 after disassembling it and reassembling it. I tried to reinstall the BIOS from a flash drive, but I can’t manage to boot from it. And also I have a blank screen.
Thanks,
Csongor
nilein
1 Message
0
February 14th, 2024 14:09
change the processor it worked the error for bios and mother board