Troubleshooting Linksys Wireless USB Adapters
There most common problems related to installing Linksys USB adapters are either the computer not recognizing the attached USB adapter, or the adapter being misconfigured.
If the USB adapter is not being detected, try the following steps to make it show up.
First, remove any cable being used between the adapter and the USB port. Plug the device directly into the USB port. There may be an issue with the cable. If that doesn't work, try plugging the adapter into a different USB port. This will sometimes result in the device being detected as a "new" adapter.
Finally, if the above steps don't work, go into the Device Manager and delete any entries for Linksys USB adapters. If that does not work, delete all of the USB entries as well and restart your computer. The USB ports will be rebuilt upon reboot.
The most common configuration problem is improper security settings. Verify that your Linksys network card settings are correct. Double check that you are using the same SSID as the wireless adapter you are trying to connect to. Also, verify that you have the same encryption method enabled and that the password is correct.
If your adapter connects but randomly drops the wireless network check out advanced wireless network connections troubleshooting.