Click Computer in Windows 7 and you might see a strange lack of drives, but don't panic, and don't go returning your newly bought drive thinking its broke. It's just Microsoft trying to be helpful: drives like memory card readers are no longer displayed if they're empty. This does seem like an improvement but it should not be a default setting as it makes things harder to figure out for inexperienced users who are used to see everything right there. To get them back, just Launch explorer. Go to Tools > Folder Options > View and uncheck “Hide empty drives in the computer folder”.