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#11
I have (almost) the same laptop (N55SF) and I got it fixed. The problem is indeed that windows keeps updating the wrong driver. To turn this off, go to: my computer -> properties -> advanced system settings -> hardware -> device installation settings. Then choose "no, let me choose what to do" and "Never install driver software from windows update".
Then just install the driver you find on the asus website. For me, it was the latest audio driver from windows 7 64 bit on this page: http://www.asus.com/be-nl/Notebooks_...Desk_Download/. However, this is for the N55SF, so you might need the one from N55SL.
My music hotkeys (left of the keyboard) weren't working either after the update to windows 10. I got this fixed by installing the "ATKACPI driver and hotkey-related utilities" from the same page.
Hope it helps!
EDIT (23 december 2015)
A new windows update removed the option to "never install driver software from windows update", so the previous solution doesn't work anymore. I have however found a new one.
Go to C:\Program Files\Realtek. Here you will find a folder named "audio". Rightclick this folder, select "properties" > Security tab > "Advanced" > "Change Permissions" > "Disable inheritance". Then select the SYSTEM permission and click "Remove".
I have added a screenshot for some clearity.
Now just run the setup file of your chosen driver, reboot your laptop and everything should work.
Last edited by Robbmeisterr; 22 Dec 2015 at 18:16.