1. Press the windows key and search ‘cmd’, then click command prompt when it appears.
2. Copy the below text block, then paste it in the black box that pops up. If you are unable to copy, type each line manually and hit enter after each line. Ignore any error or other messages that appear. Your computer will shut down afterwards.
netsh advfirewall reset
netsh int ip reset
netsh int ipv4 reset
netsh int ipv6 reset
netsh winsock reset
ipconfig /flushdns
ipconfig /release
ipconfig /renew
nbtstat -R
nbtstat –RR
shutdown /s /f /t 0
3. Turn the computer back on and check if it works.