A loud hissing noise is coming predominantly from the right-side speaker on my laptop. I have a Toshiba Satellite P755-S5380. The computer also shuts down and cycles automatically into off and on mode. At other times it will stay off or power on by itself. My operating system is Windows 7 Home. Can someone please help me out?
Edited by neuropocalyptic, 25 April 2018 - 08:10 PM.