I am unable to find WiFi driver for my Lenovo G580, model 20157. I have tried Intel and it doesn't work; I tried Atheros and it also doesn't work.
The solution below is based on one of the community user's case and does not 100% solve your issue. If you have encountered similar issue, the steps below can be used as reference to be part of your troubleshooting methods.
Please confirm which wireless card has been installed in your machine.
Then boot into BIOS by turning off the computer.
Turn it back on and start tapping F2 right away.
You should be able to boot into BIOS. Refer to this screen below:
Now go to Configuration tab and make sure the Wirelesss LAN is enabled.
Then hit F10 to save the settings and exit.
If it is already enabled, please hit enter to disable it, and enter again then re-enable it back.