windows 7 resolution stuck at 1024x768

i installed windows 7 on my laptop using flashboot pro and got everything working except for the screen resolution is set to 1024x768 and i cant change it.
I installed the graphics driver from "[Solution] Win 7/Win8.1 x64 Ryzen APU Video driver." and in device manager the display adapter is AMD Radeon™ Vega 3 Graphics and yet when I try to change resolution the adapter is VgaSave and the only resolution is 1024x768. Also the radeon software says "No AMD Graphics card is installed, or the AMD driver is not functioning properly." my laptop is VivoBook_ASUSLaptop X512DA_F512DA and the processor is AMD Ryzen 3 3200u wiith Radeon Vega Mobile GFX.