Mouse pointer moves to the upper corners and gets stuck there clicking sometimes

Good morning, all.

After trying to find something on this, I finally come to the forum seeking for help.

I still couldn't isolate the problem, it just happens randomly.

Sometimes, I'm using the computer for a long time, sometimes I just started it.

What happens is that the mouse pointer moves to the corners and gets stuck there, no matter what I do. Sometimes, I try to move the mouse and I can even see the pointer twice. 

It just gets impossible to keep using the computer. The mouse pointer stays there and sometimes it clicks with both left and right button.

This happens wheter or not I use an external mouse.

Any ideas of what could be doing this? I tried running all test now on Dell and it says nothing is wrong with my touchscreen, keyboard or mouse.

Please let me know if I was clear. I can even make a video next time it happens.

I'm using Windows 8.1 and have a Inspiron 15z 5523.

Thanks.