Can you manage to boot up to the desktop at all? If not, may be worth doing a clean install (if you haven't got much to lose).
Then (do this even if you don't reinstall):
1. Is the card listed in PCLOS Control center - Hardware - Browse and Configure Hardware? If so, is it listed as the correct type of device, and is the correct driver / module shown?
2. Is it an internal PCI adapter card, or is it a USB device?
3. Start a terminal, and run lsusb, lsmod, lspci, and iwconfig and post the results