08-29-2017 02:45 AM
Thank you for posting your query in Lenovo Forums.
As i understand that you are facing issues related to USB ports on your yoga 900 unit. I would suggest you to update the BIOS from this link
Hope the above information helps, Please check and let me know
Please feel free to post in Lenovo Community Forums if you have any further queries!
Tap that kudos button if I helped.
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"!
01-27-2018 07:23 AM - edited 01-27-2018 07:26 AM
This solution worked for me: Shut down the computer and remove the power cord. Hold in the power button for 30 seconds. The computer might come on during this, but it will shut off again. Keep holding the power button in for the 30 seconds. Then restart the computer. For me, the USB ports work again!