Error codes

Code 20

Windows could not load the driver for this device

What it means

The driver is registered but Windows failed to start it, often after a reboot or an update changed the driver state.

Common causes

• A driver that failed to load at boot
• A damaged or incomplete driver install
• Memory or resource pressure

How to fix it

1. Restart the PC; Code 20 often clears after a real restart.
2. Update or reinstall the driver from the maker.
3. Check Event Viewer > Windows Logs > System for the driver error at boot.
4. Open Terminal (Admin) and run sfc /scannow, then DISM /Online /Cleanup-Image /RestoreHealth. Restart afterwards.