Please can you assist with my wireless connection issue.

I have just recently purchased the RTL8192CE wireless Lan 802.11 PCI-E NIC and installed it in my shuttle XPC. I am using Windows 8.1 64bit OS. The LAN card is picking up my wireless router fine, but when I enter my router password an error message appears. I have checked the driver and windows sates it's working correctly, notwithstanding I reinstalled the drivers given with the LAN card just in-case. But still I am unable to connect to my wireless router.

The DSL router works fine on all my other devices, iPhone, laptop, kindle etc. and just to make sure I called my DSL service provider and they reconfigured the router. But still when I enter the password to connect to the router, it will not connect to the internet?