Laptop Noise On Booting Up

[tali1]

Everytime i boot up my lenovo g780 it makes a rattling noise - this noise comes from this
"stereo mix conexant smartaudio" on the volume mixer if i slide it down to bottom noise goes away
i have disabled thru msconfig at start up - and is still makes noise on boot up-i have even donloaded drivers - stil it is there
Problem began when i hooked up tv to laptop and messed around with audio settings
Sys Restore no work and disk clean up - nothing
Btw even though i i disable stero mix conxant smartaudio - i can still thankfully get audio okay for watching movies/playing games/listening music etc
Is there a good software that can ID and fix this problem?

[lingoes]

Generally the noise is the CPU FAN working noise. 1. You can clean the CPU fan and dip into some oil. 2. Change a powerful CPU and reduce the computer temperature . http://petsuppliesnew.com/