The notch in the sample affects the results of the impact test, thus it is necessary for the notch to be of regular dimensions and geometry. The size of the sample can also affect results, since the dimensions determine whether or not the material is in plane strain. This difference can greatly affect conclusions made.
At any point if you would like to enable touch screen functionality again, simply go back to the Device Manager, right-click HID compliant touch screen, and select Enable. Remember, you will be required to restart your PC to enable the touch screen functionality again.
In the latest builds of Windows 10, you can also launch the Settings app from the right click menu of the taskbar. To do that, right click or press and hold anywhere on the empty space on the taskbar. Then, click or tap Settings. This will open Settings and automatically take you to the Taskbar section.