Under Config > USB > Always On USB – set to "Enabled in S0 (Modern Standby)" or disable it entirely. Some P1 Gen 4 units have charging handshake issues with non-Lenovo chargers; try disabling "Battery Charge Protection" temporarily.
If a Supervisor Password is set and forgotten, the motherboard may need to be replaced, as Lenovo does not provide a "backdoor" for security reasons. Black Screen After Update: lenovo p1 gen 4 bios