I cant install the latest driver for my ATI radeon HD 4600 series. Please help!!!

What OS? INFORMATION REQUIRED WHEN POSTING A QUESTION

There is no such thing as a Radeon 4600...that is a SERIES of cards. Which one do you have?

Assuming this is NOT a laptop;

AMD Drivers and Support for Radeon, Radeon Pro, FirePro, APU, CPU, Ryzen, desktops, laptops

All of the HD4000 series are Legacy and are not supported under the newer OS.