It is an audio overload resulting in CLIPPING.

CLIPPING is when your audio signal is being pushed way above 0db mark resulting in CLICK sounds and mashed noise.

In most cases (like yours) it happens because of audio/video players' (the ones that you are using) EQ or NORMALIZE settings.
SonicMaster is only going to make it worse because IT by itself IS a very powerful software based NORMALIZER/COMPRESSOR.
NORMALIZERS (software or hardware based) usually pump up/down your audio signal to a certain average loudness with 0db cap and
they tend to compress anything that tries to go above 0db mark. But when user is pushing signal (volume) lever too high with EQ
or Volume Boost in players, NORMALIZERS fail to compress the sound without distortion and that's when you hear CLICK... CLICK CLICK... CLICK 
 
I know you are trying to adjust the sound of your players to your taste, but keep in mind that Bang & Olufsen's ICEPower chip is
designed to push your laptop speakers potential to the maximum. We have some of the best speakers on the market in N45/N55
laptops with very wide frequency range and ICEPower already uses 90-95% of that range to begin with.
So LOUDER you make your sound, less room you're gonna have for EQ adjustment without CLIPPING (or sound boosting on bad quality music or video).
The reason why you don't get that problem in the store, 'cos you are using stock players with NULLED EQ (non altered EQ/no sound boost) settings.

SOLUTION 1

Turn off ALL EQ or Volume Boost you have in your players. Use ONLY SonicMaster. IT IS LOUD AND CLEAR ENOUGH ALREADY!!! 

SOLUTION 2

Turn OFF Volume Boost in all your players, but if you HAVE to use EQ adjust it by pulling it DOWN from 0 marks, not UP.
In other words instead of upping desired frequencies, LOWER undesired ones.

Peace 

Hi skyline100, try setting the user password, that should set the password request to prompt when you boot your computer. 

no@@. i didn't develop myself@@. Just doing some simple speech macros(for windows speech recognition). For the typing part i'm using dragon naturally speaking. Still testing both of them. But personally i think windows one more flexible. For the speech macros one if anyone interested i can post it here. Its pretty simple actually

Hi everyone,

Long time lurker first time poster  . I purchased a black N55 a few months ago and so far its been good to me. I have a few questions and I've been reading through this forum and I cannot find a definitive answer, 4versions is too many pages 

First: I purchased this computer in China but I am from the states. The computer came defaulted in Chinese, but I had the tech guy change it to English. He managed to do it mostly...I say mostly because although all programs are English, when I start up/shut down the computer I still see Chinese text. Secondly, a lot of programs which I download/install default to Chinese. Is there a way I can permanently change my system settings to English...without a reformat (i am computer retarded ahah)

Secondly: which bios/driver should I update, I purchased my laptop in March.

Finally: my sonic master sub woofer stopped working suddenly after about 2 weeks, and yes I did push it in DEEPER . Reading a thread from before, a user mentioned he downloaded an updated driver which fixed the problem. Would that be the Realtek audio driver or is there a specific driver for the Sonic Master.

Sorry for the long post, and thanks in advance for anything help you guys can provide. Thanks!

-Arthur