Where are you inserting the memory card?
Go to My computer or Computer > Can you see a drive icon for memory card here?
Have you ever successfully used the card with this computer?
a month or so ago
USB mass storage deivce not working properly
Later when you want to come back:
Open the browser >
Click on favorites >
Click on the earlier bookmarked link(you may need to log in again).
Let me know, how it goes.