If the wireless card is fine, I recommend you to update the drivers for the wireless card. Here is how it is done.
· Select the Start button, type Device Manager, and select it from the list of results.
· Expand one of the categories to find the name of your device, then right-click (or tap and hold) it, and select Update Driver. For wireless cards, expand the Network adapters category, right click your wireless card and select Update Driver.
· Select Search automatically for updated driver software.
Let me know how it goes and you have a good day ahead.