Q: I recently bought mbp retina haswell 13. When i use it today suddenly my display went black....i dnt have any idea i try to press the power button then it gave beep sound. Then i press it for few seconds then it shutdown.plz help anyone

Bring your machine in for a diagnostic.

Power On Self-Test Beep Definition - Part 2 - Support - Apple

If a SMC reset does not help, do what nbar suggests, bring it to an Apple store genius bar and have them fix it.  ( I assume your MBP is in the warranty period)

http://support.apple.com/kb/ht3964

Ciao.

See Ogelthorpe's link:

Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009).

1. Shut down the computer.
2. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
3. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
4. Release all the keys and the power button at the same time.
5. Press the power button to turn on the computer. 
   Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.

 

Sorry, but there is a hardware issue with your machine. I can't be more specific than that and no online troubleshooting here exists for hardware related issues. You need to bring your machine back to Apple for a definitive diagnosis, and free replacement/repair.

Rexxal wrote:

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And one thing now my mbp is turned on how can i turned off it? Using hard press power button???

Hold the power button down for 10+ seconds to turn the MBP off.

Ciao.

Power button

sleep function

http://support.apple.com/kb/HT5869