What OS are you running? I would go to Linksys' website and download the latest drivers for your adapter for your OS.
Then I would uninstall your adapter, reboot and install the latest drivers.
I was afraid of that. Try this: Uninstall the drivers and then shut down your security software, next install the latest drivers. Does the adapter work?
I have found that at times my firewall can inhibit the loading and executing of drivers until I do the above. Once installed my firewall has no issues with the drivers. Why? I haven't a clue but it has worked for me in the past.
Then again Linksys drivers for this adapter and 7 64 may not be that good. I'd contact Linksys.
princeton, sorry to hear this. What are they failing to provide?
Everything. "We're sorry we no longer support the product specified." Then why sell them?