Hi Cesar_lnd,
We're saddened to hear about the intermittent issue with your touch pad, have you tried booting up the laptop to save mode then replicate the issue?
The model PCG-71911M is a non-US model thus we have very few information about his model. If you are outside of North America, we highly recommend visiting our Sony Global Web site for information on contacting the Sony Support Center in your region at http://www.sony.net/SonyInfo/Support/.
Regards,
Jen
Answered your question? Glad I could help! Please Click the "Accept as Solution" button below.