What should I do if the laser pointer fails and cannot turn pages?

In the process of speaking and teaching, I always feel that I will be in a hurry to flip the ppt with the mouse. After having the page-turning pen, these problems are solved. But using the page-turning pen will inevitably encounter some problems, such as the page-turning pen cannot Page turning, laser pointer keys are disordered, the receiver cannot be recognized, etc. What should I do if the page turning pen cannot turn pages? The failure of the high power laser pointer to turn pages may be caused by the driver not being installed properly, the poor contact between the receiver and the computer, etc., and it needs to be dealt with symptomatically. Can easily walk through dense forests in the dark. Want to wear a different outfit on yourself or in the car. Great value for money! I like how easily you can choose between operating modes, choice of brightness levels, and the possibility to use 3-cell vs. Li-Ion batteries.