I had this same problem and did everything that the microsoft support said to do with no resolve.
Fix
Go to Realtek.com and click the download link. In the download search box to the left type "card reader" and hit enter. You'll see a link that reads, "RTS5101/RTS5111/RTS5116/RTS5169 (Software)" click on it. The next page will give you the downloads according to your system. If you're running windows then click the very top link in the far right that says "global". The zip file will begin to download when its complete open it, double click the folder then scroll down to the "setup.exe" file. run it and follow the prompts and your card reader will start working right away.
Hope this helps! :)