My MacBook Pro won't always charge and makes a hissing noise.

My MacBook Pro (early 2011) won't always charge unless the charger in a specific position, and when it does it makes a hissing noise. I have chechek other chargers, so it's my laptop. is it my battery?

I would take it in ASAP, does not sound good no matter what.
Genius reservation http://www.apple.com/retail/geniusbar/
on-line https://getsupport.apple.com/GetproductgroupList.action
check warranty https://selfsolve.apple.com/agreementWarrantyDynamic.do

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Hi Cygnus and Lyra,
Thanks for visiting Apple Support Communities.
If the MacBook Pro doesn't respond when the power button is pressed, or seem to recognize the charger, these troubleshooting steps can help:
If the wall outlet is working and you continue to have no power try another power cord or adapter if available. If it works you may need a replacement cord or adapter.
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If your Mac supports user-installable memory, solid state drive, or hard drive, and you recently installed any of these, make sure they are installed correctly and are compatible with your computer. If possible, reinstall the original memory or drive into the computer to find out if the behavior persists afterwards.
MacBook Pro: How to remove or install memory
MacBook: How to remove or install memory
Mac Pro: How to remove or install memory
Mac mini: How to remove or install memory
iMac (27-inch, Late 2012): Installing or replacing memory
iMac: How to remove or install memory
Reset the SMC.
If you are still unable to start up your computer after trying each of these steps, visit an Apple Store or Apple Authorized Service Provider (AASP) for further diagnosis. If you plan to visit an Apple Retail Store, make a reservation at the Genius Bar using http://www.apple.com/retail/geniusbar/ (available in some countries only).
Note: Diagnostic fees may apply for issues not covered under warranty or the AppleCare Protection Plan (APP).
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Try here > Troubleshooting: My computer won't turn on
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Try the help from the suggestions above.
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Message was edited by: AUDiOZOMBiE

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LexSchellings wrote:
Click the Apple menu, then hold the Alt(=option) kex and click the SystemIformation, then on the left side click Power, and post the following info here:
verything that is in: ChargeInformation,
and in: HealthInformation.
edit "kex" is key of course....
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Battery Information:
Model Information:
Serial Number:    9G21[deleted]D3MB
Manufacturer:    DP
Device Name:    bq20z451
Pack Lot Code:    0
PCB Lot Code:    0
Firmware Version:    201
Hardware Revision:    2
Cell Revision:    158
Charge Information:
Charge Remaining (mAh):    3213
Fully Charged:    No
Charging:    No
Full Charge Capacity (mAh):    5651
Health Information:
Cycle Count:    32
Condition:    Normal
Battery Installed:    Yes
Amperage (mA):    -830
Voltage (mV):    11340
System Power Settings:
AC Power:
System Sleep Timer (Minutes):    120
Disk Sleep Timer (Minutes):    10
Display Sleep Timer (Minutes):    25
Wake on AC Change:    No
Wake on Clamshell Open:    Yes
Wake on LAN:    Yes
AutoPowerOff Delay:    14400
AutoPowerOff Enabled:    1
Display Sleep Uses Dim:    Yes
PrioritizeNetworkReachabilityOverSleep:    0
Standby Delay:    4200
Standby Enabled:    0
Battery Power:
System Sleep Timer (Minutes):    15
Disk Sleep Timer (Minutes):    10
Display Sleep Timer (Minutes):    10
Wake on AC Change:    No
Wake on Clamshell Open:    Yes
AutoPowerOff Delay:    14400
AutoPowerOff Enabled:    1
Current Power Source:    Yes
Display Sleep Uses Dim:    Yes
Reduce Brightness:    Yes
Standby Delay:    4200
Standby Enabled:    0
Hardware Configuration:
UPS Installed:    No
AC Charger Information:
Connected:    No
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My MacBook Pro won't always charge and makes a hissing noise.

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