I'd unplug that card reader and use something like this:
On my tower, there is a green light which signifies that an SD card is in my tower. However, the green light has remained on and my computer has been notified that an SD card is in it constantly when there is nothing plugged into my computer. Restarting and shutting down the computer does not help. As soon as it is switched on until it is turned off, the green light is on and my computer thinks an SD card is in my SD card slot. But, if I put an SD card in the slot (this rarely works, it only sometimes reads SD cards) and eject it from the computer, the green light goes off. But, if that occurs, my less than 50% chance of my SD card slot reading the SD card goes to 0 and becomes unresponsive until I restart my computer and the green light turns back on with nothing in it.
HOW IN THE WORLD DO I FIX THIS!??!?!
Thank you for your time.