When I attach my external hard to my computer it doesn’t show up under my computer. When I go to device manager it tells me the drive is working fine but I can’t access the drive.
Hello and welcome,
Follow the link below for the steps to add a drive letter. If the problem continues you can try connecting the hard drive to another computer or using another USB cable. Another option would be to run a test using DLG. Check the links below for the steps.