I installed driver for graphic card Radeon 550x for Windows 7. I had Windows 8.1. Drivers Installed and worked well.
After I enabled Scaling GPU and suddenly screen became black.
How can I switch off Scaling GPU? I can not enter in Safe Mode, I press F8, then boot device - press SSD, then press F8 again, but black screen again.
*AMD Graphics Card
*AMD RX 550
*Desktop or Laptop System
*Windows 8.1. Home 64 bit Professional
*Driver version installed
Crimson ReLive Edition 17.7.2 for Win 7
4K Monitor; 3840x2160 (60Hz), Display Port
*Motherboard + Bios Revision
Asus 370x Prime Pro
*AMD Ryzen 7 1700 8-Core
*16GB x 2 DDR4