Removeable Storage Missing in 'Computer'

Okay I really need help.
In my 'computer' - By that I mean the place where OS (:C) Is located and all - There is no more an option for removable media. Or removable storage. I run windows 7 home premium 64 bit.

So basicly no SD, Usb use to work. UNLESS I go to change driver letters and paths and then choose assign a letter and assign one but it only works for one time and then next time insert a different or same usb nothing happens. This is crazy. There is suppose to be a drop down bar in 'computer' but its just not there. Only hard drive disks drop down menu is there.
And I have a asus laptop. U50 F Series.

Please Someone Help me!

Did you resolve it?

I've just had it happen to me today.