i have a AMD Radeon RX 550 2gb GDDR5. please help me. when i run a game i get an error directxfunction and the game crashes and then aftr\er the crash when igo to ru and type regedit and then goto graphic driver a new value is created "unsupportedmonitorm

i have a AMD Radeon RX 550 2gb GDDR5. please help me. when i run a game i get an error direct x function and the game crashes and then aftr\er the crash when i go to run and type regedit and then go to graphic driver a new value is created "unsupportedmonitormodesallowed".

my specs are core 2 quad q9300 2.5ghz

8gbram ddr2