Drive L Not Showing

I am going to try to explain this as best I can. This is a friends computer. She has this sewing machine that has a memory stick that she plugs into her computer. As you can see on the 1st screen shot "removable Drive L" is NOT present. It used to show but it does not show anymore. She sad that she clicked on "EJECT DISC", and now Removable Drive L " does not show UNLESS she has the memory stick plugged in as you can see in the 2nd screen shot. So she is wanting to know how she can get "removable Drive L" to show up again, like drives. G,H,I and J. I am asking her for more information because now that I look at these screen shots, I see in the 2nd one that she actually is showing "6" Removable drives.