AVG pop up advises me Belkin adapter needs software upgrade with $$$

Hello Michael,
We are sorry to hear that. Please try to login your PC into safe mode and check whether you could restore your PC to last good known configuration.
Please follow the instructions on the article http://avgclick.me/rebootintosafemode to boot your PC in safe mode.
Thank you.

Checked with Belkin on device F9L1002v1 but found no mention of any s/ware upgrade.

Anyway, on the strength of your reco decided to load their current s/ware anyway.  My bad!

In the process Belkin first removed existing software "cutting the cord" .  STUPID eh!  Device is no longer functioning and now unable to roll back.

Perhaps you can help?

Hello Michael,

We are really sorry that  you facing issue with WiFi connectivity after installing Belkin software. This issue is not related to AVG, it seems your WiFi drivers corrupted or Belkin has override to your WiFi files so you may need to contact  Belkin's software support team to fix this issue. They may help you with WiFi drivers and your connectivity issues. Thank you for your understanding in this matter.
Thank you.

Hello Michael,
We are sorry to hear that. Please try to login your PC into safe mode and check whether you could restore your PC to last good known configuration.
Please follow the instructions on the article http://avgclick.me/rebootintosafemode to boot your PC in safe mode.
Thank you.