Wireless will not work constantly disconnecting. Never have more than 1 bar. I have updated the wireless adapter driver to latest and checked router as well. I also brought laptop to other locations to test. Still not functioning. All other devices laptops, phones and ipads work fine. I decided to replace the wifi card and installed the most up to date drivers. Still getting one bar and will not stay connected. Again tried multiple locations. Ended up having to use a usb wifi stick which works fine with full bars. What else can be causing internal cards to not work?