How to install WIFI driver for Ubuntu 15.10 on Lenovo g505 laptop?

Question

linux

NEED HELP!!!
the third hour I google I can’t find a solution for myself, I have a special case. Unable to install wifi driver. I reviewed various video lessons, commands, etc.
In the terminal, I ran the command: ~ s lspci -vvnn | grep 14e4 and got this:
02:00,0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01).

Answer 1

# apt-get install --reinstall linux-headers-$(uname -r|sed 's,[^-]*-[^-]*-,,') broadcom-sta-dkms
# apt-get install --reinstall bcmwl-kernel-source
# modprobe -r b44 b43 b43legacy ssb brcmsmac bcma
# modprobe wl

Sources:
https://wiki.debian.org/wl
forum.ubuntu.ru/index.php?topic=216838.0