been having the problem above on two computers, one fixed itself somehow after a few days (it was connected to ethernet so maybe an update fixed it???) The other had Ubuntu 20.04 installed a few days ago and again it seems to see the wifi card ok but the card cannot see my home wifi network or any others that it could see previously. I have found some very old threads mentioning this card from many years ago and didn't want to mess with anything incase it made matters worse.
Could anyone explain how I can track down this issue / fix this issue? The ethernet works ok on this. The other thing that just came to mind was when I installed Ubuntu on these two computers, during the installation it also didn't see any wifi networks and I had to install by selecting the ethernet for the downloads of updates. Computer is an HP G5370UK
WiFi card info:
Network Controller: Ralink corp. RT3090 Wireless 802.11n 1T/1R PCIe
Thanks for any help Simon