If that doesn't work, your card reader may be faulty after all. Close all Windows and all should be well. Click and assign it a drive letter that does not conflict with any other drives in your computer. Right-click on the drive in the bottom pane and choose "Change drive Letter and Paths.". If it is listed, is it shown in the top half of the window? If not, it probably needs to be mapped to a drive letter. Is the card listed there (it should be shown as Disk # where "#" is the highest number in the list)? In the bottom half of that window there's a list of your storage devices. Insert the card and run Windows Disk Management. My suggestion would be to test the second possibility first.
The card is detected and mounted, but is not shown in "Computer" for some reason. The card reader is faulty (could be a dirty contact, or something else).Ģ. The fact that the card works on another computer suggests that it is not faulty, and although it is technically possible that it is formatted in a way your PC doesn't recognise, there's no reason to think the problem is there.