Second monitor not displaying anything

[hamudehorde]

Hello i have a lenovo z51-70 intel core i7-5500u 2.4gz AMD radeon r9 375m 4gb 16gb ram and a hybrid 8gb+1000 SSD/HDD Display 1920x1080 FullHD ok straight to the point i got a second PC monitor 1440x900 it was working perfectly when i was using Windowns 8.1 but when i upgraded the drivers and to windows 10 after a week it started flickering so i unplugged it and plugged it back in it displayed everything for about 2 seconds then went full black not sure what to do please help (sorry for my bad English)

 

[Laptop_Nerd]

Hi,

Please try to do a clean install of your graphics card driver because that may be the cause of that problem.

Here's the complete guide on how to:
http/www.tomshardware.com/faq/id-2767677/clean-graphics-driver-install-windows.html

Once the latest driver has been installed reboot your laptop for all the changes to take effect.