Dell Rugged 7202 Mouse Wandering Problem 

after 3 days of troubleshoots I finally found a solution via your video thank you very much. you're an Angel

Thanks a lot. It works for my tablet too, it tooks me several days to fixed!!

Interesting, though I still had to replace the LCD on my 7202 because it had dirt behind the touchscreen and certain spots were unusable. Anyway, this is an issue also prevalent on certain Toughbooks, I believe I have it occur on my CF-18 with the GPS module. GPS often uses COM ports, similar to a serial mouse, and I've been under the impression the computer is interpreting GPS communication as a serial mouse.

Thx wonderful. Perfect method