Check if ur running on Windows IP. Happened to me alot during windows vista time.
The only way is to run diagnostic to reset the windows IP.
The reason it happen is ur laptop is unable to retrieve IP address from the router nuff said.

Yea I cant run Saint Row 3 at high or ultra with either HD or HD+ resolutions.At most I can do medium and high settings.Surprisingly,when I did a default configuration based on my graphic card,everything is set to ultra but lagging like hell.

Most probably I will install it when it comes out next week.Gonna post screenshot if I did 

Yup it is a cracking sound. Also, based from my observations, the cracking sounds were more prominent when I set the power settings to battery savings as compared to when it is in high performance. When in high performance, there is still evident cracking sounds but to a lower degree.

I used to have rainmeter with network meter but even when I already removed it problem persisted. Please, for all of our sakes, would you care to look for the steps you took to get rid of this prob :|.

Just got my laptop back from the service center. There's no more cracking sounds with the speaker after they replaced it. Tested it in youtube, mp3, movies; with & without adapter; in various power settings; etc. Hehehe I'm quite happy    except for the bloody amount of time it took them to fix it.

I'm currently backing up my files etc. and planning to do a clean format afterwards. Hmmmm I you still aren't able to fix the problem, I suggest you turn to tech support as a last resort 

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Added on April 24, 2012, 2:26 pm

By the way, does anyone have an idea on what sample rate and bit depth to use in order to fully make use of the 2.1 sound system?

I'm from the Philippines so uhhh I don't think this would be much help, but I sent mine to the service center called servimax which caters for the 1 year warranty of my unit. Before handing them over the laptop, they let me play a movie to show the problem. The only bad thing about the repair is that it took more than 3 weeks to return. But after I asked them afterwards they said that I could have opted to go to them, test the unit, bring home the laptop, wait for the part availability (which in my case 2+ weeks 'coz i believe they shipped the thermal plate + speaker from taiwan), and finally return to their office so that they can fix your unit and replace the parts. However, I don't know the policy in malaysia. Sorry mate. And good luck!

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Added on April 25, 2012, 5:14 pm

I sent my unit for parts replacement and that's what's indicated in the surrender form. They said they replaced it so I'm betting on it. I wasn't able to check for software updates though due to my excitement in doing a clean reformat. And I believe that they wouldn't go against the agreement we entered to when we signed the surrender form, otherwise they'd be facing a legal case 

hhmm..i might just send it for repair. aside from the speaker I noticed the keyboard at the arrows key area when pressed caused all other keys to bend down a little..it's like its not fit. damn I hate this. 
I also format my computer when I got..still got the cracking sound. 

Waiting for Diablo 3,Prototype 2 and Max Payne 3

You might want to check your rams..i solve mine by changing rams..

@Higuain: the Wrist rest area of my n55 cant last long if i use without ext kb, the rubber quality is not good (now if I see any IT product with rubber surface I feel bad  )
the GT 650M N56 > GT 555M ~17% .

correction: GT650m performance are better than both of the above roughly 11% more than GTX560m

Mine is N45SF, so max is only 1366 X 720. Dunno why, I like to play with 1280 X 720 more. And I don't try to maxed out the details settings as I feel the details is good enough for me to play. It's totally different story if it is N55 which support higher res. 

mine playing 1920x1080...lol and very high graphics...others all medium