Reset operation method:

1. Unplug the power supply, battery and all external devices from the computer (ensure complete power failure);

2. Press and hold the power button for about 15 to 20 seconds;

3. After that, connect the power supply and battery to the machine, and then turn on the machine.

ThinkPad (ThinkPad) is a portable computer brand founded by IBM PC department, and enjoys a high reputation in the industry for its solid and reliable characteristics. It was acquired by Lenovo in 2005, and the ThinkPad trademark belongs to Lenovo.

ThinkPad has always maintained a classic black appearance since it came out, and also has its own unique views on technology, such as TrackPoint (pointing stick, commonly known as Little Red Riding Hood), ThinkLight keyboard light, full-size keyboard, APS (Active Protection System).