D
Donna WilliamsonSep 14, 2025
How to fix keyboard controller failure on Dell OptiPlex 5080 Small Form Factor?
- KKevin PerrySep 15, 2025
If your Dell Desktop displays 'KEYBOARD CONTROLLER FAILURE', and you use an external keyboard, check the cable connection. Restart the computer, and avoid touching the keyboard or the mouse during the boot routine.
 











