Have you ever used the card reader before ???? All I want to know is if it has ever worked. If we are unsure then open the case and check to make sure everything is plugged in tight. I'm thinking your card reader will have one plug, about 1.5 cm wide and hase two rows of pins. That is what mine looks like, make sure it is plugged in tight and as well plugged in tight on the motherboard. (you may even want to remove, check for bent/missing pins then replug.)
Restart the computer into safe mode. After that go into device manager adn uninstall all the USB drivers with the !'s . Then go into system devices and uninstall the motherboard "RESOURCES" ----DO NOT UNINSTALL MOTHERBOARD "DRIVERs"----- Restart the computer and enter your BIOS/SETUP . Restore defualt settings, save and exit.
If it still doesn't work then---you may want to back up all your stuff and spin it. (Sorry I use the term spin for recovery/reinstalling the operating system).