First you need to give your PC information because your Post is extremely vague.
But if by "Radeon Graphics" you are talking about your APU Processor's Integrated Graphics you need to go to AMD Download page and choose "Processors with Graphics" and then choose your APU processor: https://www.amd.com/en/support
NOTE: If you APU processor is not listed it is probably because your AMD APU is a OEM Processor.
