Many Lenovo BIOSes have a Wi-Fi card whitelist . An unsupported card will cause “Unauthorized Wireless Card” error on boot.
sudo modprobe -r iwlwifi && sudo modprobe iwlwifi n14939 wireless card
Here is the hard truth: You should replace this card. Upgrading from the n14939 to a modern Wi-Fi 5 (802.11ac) or Wi-Fi 6 (802.11ax) card is the single best performance upgrade you can make to an older laptop, second only to swapping an HDD for an SSD. Many Lenovo BIOSes have a Wi-Fi card whitelist