1. Check whether the touchpad is turned on, and press the shortcut key "Fn+f9" (this is an example of ASUS notebook). Other notebooks are also this icon.
2. If the touchpad is open, the touchpad program may be damaged or accidentally uninstalled by the user. Just reinstall it. Use the software Driver Wizard for testing and installation.
There is a virus in the computer. Scan thoroughly with anti-virus software to delete the virus.
4. If the above methods can't be solved, open the "Control Panel" and select "Hardware and Sound".
5. Select the blue font "Mouse" under "Devices and Printers" to enter.
6. In the mouse properties, click "Hardware" in the taskbar above to see if the device is working properly. If it is not normal, most of the system will be solved by reinstallation.
Extended data:
1, TouchPad (touchpad or TrackPad) is a widely used input device in notebook computers. Which controls the action of the pointer by sensing the movement of the user's finger.
2. Touchpad can be regarded as a substitute for mouse. Touchpads can also be found on other portable devices, such as personal digital assistants and some portable audio-visual devices. Due to design constraints, the touchpad is usually not larger than 20 square centimeters.
3. Among them, Apple's MacBook Pro is equipped with the best multi-touch pad, which can be used for gesture operations such as zooming in and out the display screen and handwriting input. It takes advantage of Apple's multi-touch technology. This technology was first developed and patented by FingerWorks (a small company in San Francisco and later acquired by Apple) and was first applied to iPhone.
4. The touch panel is made into an array of rows and columns with printed circuit boards; The printed board and the plastic film on the surface are strongly bonded on both sides, and its induction detection principle is capacitance induction. The special integrated circuit board under the surface of the touchpad will continuously measure and report this trajectory, thus detecting the movement and position of the finger.
Touchpad is an input device, which can move the cursor through the sliding operation of fingers on the smooth touchpad. Can make it easy for beginners to get started. Because the thickness of the touchpad is very thin. So it can be designed on an ultra-thin notebook computer or keyboard. It is not a mechanical design. Maintenance is very simple.
6. Its working principle is that when the user's finger approaches the touchpad, the capacitance will change, and the control IC of the touchpad will detect the capacitance change and convert it into coordinates. The touchpad is sensitive to the heat of fingers through capacitive induction. When the finger touches the board, the electrostatic field on the board will change. The touchpad sensor is just a finger track conductive line printed on the surface of the board.
Source: Baidu Kewen: Touch Panel