After i did something my front and back audio panel dont detect anything connected to it anymore, i got a dell Optiplex 990MT
"something" is trying to move the motherboard from a new case but didn't worked as expected so i moved it back to the old caseAfter i did something
What might that something be?
Have you tried uninstalling and reinstalling your audio drivers for your prebuilt? Check and see if you've got any BIOS updates pending for your prebuilt. What OS are you working with?