<<< When I was attempting to install my router >>>
What do you mean by "install"? You don't install a router - it is a network device that you connect to and which shouldn't require the installation of any software in the PC.
Having got everything set up and working with your laptop, it should just have been a matter of installing the new Wireless Network Adapter in the PC, running its software (or Windows' wireless netwoking software) to scan for "Available Networks, finding and selecting the one that matches the SSID of your router and "Connecting" to it.
If you have only just in the last day or so installed the WiFi adapter in the PC, I would be inclined to uninstall it, run System Restore back to before you first installed it (to remove any related entries from the registry) and start again.