Hi,
If you are running Win 10 have you checked that you have the latest Ultranav drivers installed?
Here is a link to the download page for the driver for your laptop. In the '''component''' selection box (half way down the page, select ''Mouse and Keyboard''. In the '''Operating System ''' box next to it select ''Win 10 32 bit''. Click on the download link for the UltraNav driver.
http://support.lenovo.com/us/en/products/Laptops-and-netbooks/ThinkPad-X-Series-laptops/ThinkPad-X230?tabName=Downloads&linkTrack=Mast:SubNav:Support:Drivers%20and%20Software