The HD 7700 is legacy, the drivers are available but you have to manually select your product.
Go to the AMD driver download page
https://www.amd.com/en/support/download/drivers.html
Scroll to the bottom and either search for your model name or use the drop down menus to select your hardware.
Ryzen R7 5700X | B550 Gaming X | 2x16GB G.Skill 3600 | Radeon RX 7900XT
Ryzen R7 5700G | B550 Gaming X | 2x8GB G.Skill 4000 | Radeon Vega 8 IGP
Ryzen R5 5600 | B550 Gaming Edge | 4x8GB G.Skill 3600 | Radeon RX 6800XT