hi lozzaraine, welcome to TK.
will you remove the sd card from your laptop and go to device manager please, start, right click my computer and then select manage. then select device manager then press the plus sign next to sd host adaptors.
now insert the sd card and you should see the device manager reload if its recognised something connected to the computer.
if you see your card after it has reconnected and it is still not seen in my computer then right click on it and select uninstall in the device manager.
remove the sd card and do a restart, reinsert the sd card and fingers crossed it should reinstall itself and yet again be recognised.