|Things to try:|
1) Ensure it has the most recent drivers available.
if that doesn't fix the issue:
2) Uninstall the device from Control Panel and reboot and let windows "find" and install the device again.
If neither of the above works, you may have a bad card and will have to replace it. If it's only 6 weeks old, grab the receipt and take it back where you bought it and have them replace it.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.