I don't know your particular model or situation and what the root cause would even be, but I have had issues with the USB ports that were later fixed in firmwar

I don't know your particular model or situation and what the root cause would even be, but I have had issues with the USB ports that were later fixed in firmware, or one port that would stop working after a BIOS update until I disconnect the battery and wait a few minutes. Others on the Lenovo forums have identical/similar issues and resolutions. I also had a functional laptop where they switched out the mainboard due to USB connector issues (which never showed up in BIOS tests). Lenovo's approach to USB is a mystery.