Hi. I have the same problem with my sd card. I have checked it using my mothers windows 7 laptop and it works fine. Not opening on my Windows 8.1 laptop though. I have only had this laptop for a week but have spent the last 3 days trying to get this working. I have installed all the drivers for my HP G2 255 Notebook and have no luck. I have tried running the troubleshooting and it just keeps saying "Hardware changes may not have been detected". I have looked in device manager and found the card reader and it says it is working fine so why does my memory card not open when inserted?
Please, please can someone tell me how to fix this! I have tried everything I can think of and also what has already been suggested here.
Many thanks