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January 6th, 2019 06:00
Updating the BIOS question
What is the latest BIOS for Dell OptiPlex SFF desktop PC? how can I prepare bootable USB to update the BIOS? my PC build 2009 not booting and soon the LED number 1 and 3 start to blink alternating with the power indicator, I feel it may be BIOS issue damaged and need to be recovered the Hard ware seem OK, any help is very much appreciated.
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Bill-UK
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January 6th, 2019 07:00
https://www.dell.com/support/article/uk/en/ukbsdt1/sln284978/a-reference-guide-to-the-dell-optiplex-diagnostic-indicators?lang=en
1 and 3 seems indicate memory module, or CMOS configuration error, and it suggests a course of action to try to resolve it.
Given the age of the computer, when was the last time the lithium coin battery was changed if it has one. (probably a CR2032)
bradthetechnut
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January 6th, 2019 15:00
If your power indicator is blinking orange, the PSU is receiving power, but is unable to distribute. In other words, a bad power supply.
If you do get your Optiplex working, use the "Drivers & Downloads" link below this post to get the latest BIOS. You may need to download a previous version first, like A19, to get A22.
As for lights 1 & 3, I copied the text (table below) before I noticed the answer above, so this seconds it. Start with the memory if you can't do the first step. This works if your Optiplex gives you a green power light when on. Of course, power off and unplug when removing or inserting any memory modules.