Update windows throught Windows Update
1) Download ->DDU , -> Latest Intel Driver -> and Latest AMD driver (Adrenalin Edition 18.6.1 Optional)
2) Close Internet Connection
2) Go into Safe boot
3) Run DDU
4) Delete Intel Driver (press Clean and DO NOT restart)
5) Delete AMD driver (press Clean and Restart)
For Steps 4 and 5 , Maybe you can delete them both at the same time - else follow the steps (4 and 5)
After reboot
6) Install Intel driver - reboot
After reboot
7) Install AMD driver - reboot
After reboot
8) Open Internet Connection