AMD Ryzen ™ 5 3400G with Radeon ™ RX Vega 11 Graphics
Motherboard: ASUS B450M-A
[Memory manufacturer / model / specifications]
VENGEANCE BLACK 16GB (2X8) 3200MHz DDR4 PC RAM
ADATA XPG GAMMIX S11 Pro M.2 256GB SSD PCI Express 3.0 3D TLC NVMe AGAMMIXS11P-256GT-C
MONITOR: SyncMaster 923nw
Bios settings, Gpu mode settings, Extrem (1600Mhz) Mode and Turbo (1500Mhz) mode when I select the computer after a while the screen turns black and the PC is locked. Normal Auto (1400Mhz) is not a problem when I switch to mode.
I have tried the same problem with another monitor on hdmı and vga inputs. Why is this happening? Speed and quality are increasing in high modes. What should I do to use these modes?