Very often come across laptops, in which the pointing device lives its own life.
This can occur rarely and not painfully noticeable, and maybe permanently. This most often occurs due to faulty contacts. How to fix it?
I'll tell you by example.
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My sony vaio joystick constantly carried the cursor to some of the corners. Sometimes, he even tried so hard that he couldn’t pull him out of there. The worst thing is that this joystick could not be disabled.

Today I decided to fix it. I even filmed the process so that my experience would be useful for you too, dear reader.
Let's get started
First of all, when turning off the laptop, unscrew the right bolt.

Left bolt.

Then carefully remove the panel, after pulling out the battery and power cable.

To hell with a rifle pluck from the joystick.

Putting it back.

Connect a wireless mouse.

READY!

Note that the way your laptop is parsed may be completely different from mine.
In general, the problem was solved.