Help- E7470 Laptop Goes Crazy

It is just strange. The laptop will be working fine and then all of a sudden you will see random right clicks, the cursor cycling through the desktop icons, if any windows are open they may close or open. I have replaced the battery and did a double diagnostic test and everything checked out OK. I also checked for viruses and malware and it has nothing. When I squeezed the left lower corner of the laptop the cursor will stop jumping around. Is there something in that left lower corner that I could be pushing on that stops this? 

something is pressing on the trackpad; unless the trackpad itself is going bad

Would this even happen if I disabled the trackpad and buttons? I disabled the trackpad and used an external mouse and it is still happening. Thanks so much for your answer and let me know what you think. 

Using an external mouse should work.

I would suggest disconnecting from the internet and see if the issue still occurs. It could be a malware problem given that it happens a specific time into use.

I ran Malwarebytes and antivirus and it is clean. It even happens with an external mouse but stops if I tap on the left lower corner of the laptop 

It is either mechanical or heat related .

At this point, look around or keep using the external mouse.