First, go to the below site to get the drivers for your card.
Rosewill.com - Download Center for Driver, User Manual , Firmware, Application
Right click on Computer and select Properties
Go to the Hardware tab
Click Device Manager
Go down to, and expand Network Adapters
Right click on the appropriate NIC and select Properties
Go to the Driver tab
Go to below site and download CCleaner
Piriform - Download CCleaner, Defraggler, Recuva, Speccy - Millions of users worldwide!
Open CCleaner and click on the Registry Cleaner on the left
Click Scan for issues
When that completes click Fix Selected Issues
When prompted, make a backup of the registry
Now click Fix All Selected Issues
Close CCleaner and turn off the computer.
Completely unplug it and let it sit for about a minute
Fire it back up and go back to the Device Manager but now you should see a device with a yellow question mark. If not then you can manually add it.
Right click, Update Driver
Don't Search, I will choose the driver to install.
Network Adapters > Next
Point to the driver that you downloaded from the site above
See if that works, you may have to restart but it should work right away.