Notebook Wireless and Networking

I have a HP Spectre laptop which has been working fine until a Windows 10 update happened. Now the WiFI adapter (Intel 8265) is not installed (gives Code 56 error when I view in Device Manager). There is a yellow exclamation mark in front of the device. I have tried uninstalling, disabling, updating driver (also used the Intel tool to update driver). Nothing works. I used the Intel site to update driver, I used the HP support site to update driver....no luck. Code 56 error remains with the WiFi network adapter. I tried recovery which managed to get it to work again for 7 days and the update happened again. Stopped working. Very frustrating. Even a USB to Ethernet adapter cannot be installed (same code 56 error and the yellow mark in front of the device). Only thing that works is a USB to LTE dongle so I can get some internet access. I have tried all sorts of rolling back drivers, deleting and installing drivers (pretty much everything that is on the internet!). The WiFI adapter hardware must be good since it works when one of the recovery mechanisms work so does not look like a hardware problem. Can anybody help me with this? Really need the WiFi to work. In Network and Internet Settings, under Network adapters, I only see the Bluetooth adapter. No WiFi adapter. Also, hopefully once I get it to work again, how do I permanently disable ANY driver or Windows update? Very frustrating. Thank you for your help.