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February 15th, 2022 06:00

Orange light and 2 orange Optiflex 790 Desktop

IMG_20220214_204828.jpg

Hello, I was occupying it when the electricity went out and I turned it on again and it worked.It wasn't when the light went out a few minutes and I decided not to turn it on until tomorrow but this time it did not give an image and it had the orange light and the orange number 2, as well as the heatsink had a high speed, the fan had a high speed when the computer was just turned on. the orange light on the power button is a solid orange light.

 

  

6 Posts

February 15th, 2022 07:00

IMG_20220215_095055.jpg

 What is that?

9 Legend

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33.3K Posts

February 15th, 2022 07:00

With a power failure anything is possible.

#2 light possibilities according to Dell.

 

 

 

 

A possible adapter card or system board failure has occurred.
  • Remove all adapter from the PCI and PCI-E slots and restart the computer. If the computer boots, add the adapter back one by one until you find the faulty card.

9 Legend

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33.3K Posts

February 15th, 2022 08:00

Sorry, what is what?

 

6 Posts

February 15th, 2022 08:00

what does it mean about: "Remove all adapter from the PCI and PCI-E slots and restart the computer"

9 Legend

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33.3K Posts

February 15th, 2022 09:00

These two cards

cards.png

6 Posts

February 15th, 2022 10:00

I just did it, I turned on the PC without the 2 cards and it had the same problem, then I tried it one by one and both separately gave the same problem that had been commented on previously

6 Posts

February 15th, 2022 12:00

check each mosfet on the motherboard and 2 mosfets do not give continuity but the others do, this is due to the negative of the 12 v 

IMG_20220215_130515.jpg

IMG_20220215_130806.jpg

IMG_20220215_130448.jpg

  •   in the photo where there are two mosfet the one that does not give continuity it's the one on the left

6 Professor

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7.9K Posts

February 15th, 2022 14:00

A possible adapter card or system board failure has occurred.
  • Remove all adapter from the PCI and PCI-E slots and restart the computer. If the computer boots, add the adapter back one by one until you find the faulty card.

 

That's good troubleshooting you did.  Before giving up on the MB, we normally suggest changing the size 2032 CMOS battery if it's 5+ years old.  It also applies if the error code doesn't seem to fit.  In this case, you removed the PCIe cards and nothing.

Problem could still be the MB, but a battery change attempt is cheaper than an MB.

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