AMD Ryzen 7 1700
ASRock B450 Gaming-ITX/ac; AMD B450 (Low-Power Promontory PROM26.A)
16g DDR4-2666 / PC4-21300 DDR4 SDRAM UDIMM
EVGA GTX 1050 Ti GAMING; NVIDIA GeForce GTX 1050 Ti
Samsung SSD 970 PRO 512GB
Microsoft Windows 7 Ultimate (x64) Build 7601 (Service Pack 1)

i have a corsair wireless keyboard and mouse that work fine, except witcher 3 goty is not detecting them; when i start witcher, the cut scene opens fine and goes all the way to the menu

then i can't do anything because i don't have a mouse and keyboard

corsair k63 wireless keyboard with most recent stable rom
corsair dark core wireless mouse with most recent stable rom

===================================================== update ============

ok, i've seen this problem before in thief

change the dpi back to 100%

mine was set to 150. as soon as i set it back to 100, the mouse pointer came back