Causes and solutions:
1. Mouse problem: some mice are not positioned correctly. In addition, there is no corresponding driver installed or there is dust on the mouse pad. If you use a mechanical mouse, it would be better to clean the dust inside. If you use an optical mouse, check whether the mouse pad or desktop under the mouse has a shading similar to red. The optical mouse is sensitive to red, It is easy to make parsing errors. It is recommended to use a monochrome mouse pad other than the red system.
2. Virus or Trojan horse control: some viruses can change the direction of the mouse, causing wrong clicks. If you are hit by a Trojan horse and others are just controlling the computer, the mouse will move according to the wishes of the controller. You only need to update the anti-virus software and disconnect the network to kill the virus.
3. If not, right click "properties" - "Start Menu" in the bottom taskbar. At this time, there will be two options of "[start] menu" and "classic [start] menu", If you usually use the [start] menu (above), select "Customize" in the back, pop up the check item, select "advanced", drop-down dialog box, and find "start drag and drop". If it is not checked, check it. If it is checked, remove the check first, click OK, enter again, check it and then confirm; if you usually use the "classic [start] menu" (in the following), click "Customize" and directly find "start drag and drop", which is the same as the previous method (shubiaoturanyoudiantuobudongdeganjiao)