If you are talking about a windows (OS) password there are some tools that might help, but they are not always `100%. Google "Windows Login Password Recovery" for options.
If you are referring to a BIOS password that you enter when the system first powers on, the only way to get that reset is to replace the system board.
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.