The AMD PSP Driver and SMBus driver should be compatible with the B450 and Ryzen 5500.
Make sure your BIOS is up to date.
Check Windows Device Manager whether any devices are indicating problems and any error codes.
Try to force a driver update through Device Manager for any devices that indicate a problem.
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