Re: Bios error usb 2.0 bot faild and not save changes
That looks like the USB drive has failed, or the boot sector on it has become unreadable. Would try it on a different machine, or scan the USB drive for errors if possible.
I do not work for Lenovo, I only provide suggestions based on my personal willingness to help others. All advice and comments are based on my experience, and do not reflect Lenovo policy, terms or conditions.