How to Fix a Device Which Does Not Exist Was Specified Fix 1. Uninstall and Reconnect the Drive. Fix 2. Gain Permissions to Access the Drive. Fix 3. Change the Drive Letter. Fix 4. Update the Motherboard Drivers. Fix 5. Check and Fix Bad Sectors. Fix 6. Recreate the Partition. Fix 7. Change the Motherboard Headers. Feb 22, 2023