How to unlocked my macbook pro retina?

I have locked somehow my macbook pro with retina display. I try to put in the password but it won't accept it. Please help!

http://coolestguidesontheplanet.com/reset-forgotten-admin-password-osx-10-8-moun tain-lion/
OS X Mavericks: If you forget your login password
OS X Mavericks: Reset a login password

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Hi rainson,
Here is a list of video adapters and the Mac models they can be used with:
About Apple video adapters and cables
http://support.apple.com/kb/ht3235
This article describes Target Display Mode, which may also be useful for what you are trying to do:
Target Display Mode: Frequently Asked Questions (FAQ)
http://support.apple.com/kb/ht3924
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HT2807 how to know my macbook pro retina display is lg or samsung ? thank you

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Type this in Terminal
ioreg -lw0 | grep \"EDID\" | sed "/[^<]*</s///" | xxd -p -r | strings -6
it will give a string of numbers/letters
if they start with "LP" you have an LG screen
if they start with "LSN" you have a sansung screen

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Hi everyone, this is my first Mac and for the most part it's been really, really wonderful.
This is my first major glitch: I cannot get it to detect my external display: It is an ASUS PA248Q, manufactured Aug 2012.
The HDMI cable according to my Amazon history is at least 1.3c from 2010, "Fanatic Digital Imperial Series Gold-Plated HDMI Cable (6 feet)".
It works with perfectly connecting an AmazonTV box to an old Samsung TV, with vivid clarity, unlike our cableTV signal.
Just in case, I have a new HDMI cable on order, which claims to be of newest standards.
The Macbook Pro Retina (late 2013) has the standard Intel Iris from the Haswell chips, as well as Nvidia GT 750M, the latter which I don't think has been used yet.
The ASUS display says: HDMI NO SIGNAL.
I have tried shutting them down and replugging the cable. I don't know what the ideal order is. The Macbook Pro is plugged into AC power, as suggested.
In System Preferences>Display, I press the Option key to select "Detect Displays" option (seriously unintuitive).
I have also tried resetting the NVRAM:
I shut the machine down. Pressed the power button, then quickly held the quadruplet: Option-Command-P-R (a double handful) and waited for the machine to chime a 2nd time. Tried to detect external display no luck.
Next, I reset the SMC:
I shut the machine down. Then I pressed Shift-Control-Option-Power for about 5 to 10s. Then I turned on the machine normally.
NVRAM & SMC steps were from an old youtube video, as the instructions I had did not explain how to do so clearly.
Please let me know if I"m doing something wrong.
Seems so exorbitant to pay $350 for Apple Care; that's a the cost for a whole new cheap laptop.
I will search the forums again. If anyone answers this, thank so much!

Hello there, willr314.
It sounds like you've covered most of the practical steps found in this Knowledge Base article:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573#1
No video or no signal, image distortion, "snow," or flickering
Check connections
When using an external display be sure to check the following:
If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
Monitor and Display Adapter Table
About Mini DisplayPort to HDMI adapters
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
Thunderbolt ports and displays: Frequently asked questions (FAQ)
Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
Try unplugging the video adapter or cable and then plug it back in.
If more than one video adapter is in use (or "daisy-chained"), troubleshoot by using only one adapter.
Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.
If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).
Reset the system
You can reset the Mac's parameter RAM and SMC.Reset the resolutionStart by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:
Start up in Safe Mode.
From the Apple () menu, choose System Preferences.
Choose Displays from the View menu to open the preferences pane.
Select any resolution and refresh rate that your display supports.
Restart your computer.
The article does offer some additional links and recommendations as well:
These articles may offer additional assistance and information about displays and video adapters:
Apple Portables: How to use your computer in closed lid mode with an external display
Apple Cinema Display (30-inch DVI) has 1280 x 800 as the maximum available resolution
Mac Pro (Early 2009), Mac Pro (Mid 2010): Supported display configurations
For assistance with Retina displays, please see Frequently asked questions about using a Retina display.
If you tried all of these steps for your display and the video issues persist, contact Apple technical support or take your Apple computer to the nearest Apple Store or Apple Authorized Service Provider (AASP) for 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).
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

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I just bought a brand new MacBook Pro 15inch 2.7ghz 16GB RAM model. I want to know how am I supposed to charge the laptop for the first time & plus charging cycles as I continue to use it later on? I've had bad experiences with the iP
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Interesting, looking at this page from Apple http://www.apple.com/batteries/ and then following the links at the bottom for each device (notebook, iPod, iPad, iPhone) Apple seems to be recommending one deep cycle a month, that is a discharge to 0 and then a full charge.
For example from the iPhone page:
Use iPhone Regularly
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What Apple advertises as time on a full charge is based on ultra conservative settings and use. It doe not reflect the 'real' world. Read the fine print and note the words 'up to', nor will, guaranty or promise.
Your battery run time will be a reflection of what applications you have open and the respective resources these applications require.
Here is a link to some good information regarding your MBP battery and its usage. This will give you something to do for the rest of the afternoon.
http://www.apple.com/support/macbookpro/batteries_power/
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Hi!
As the title says, how I can protect my new MBP Retina Display?
I found this browsing some forums:
http://store.griffintechnology.com/techsafe-cable-lock-system
But, i don't know if it works with the new MBP Retina.
Any suggestions?
thx

David.Pico wrote:
Usually in sight but sometimes (eat, toilet ...) it is impossible...
Understood.
I don't understand why Apple did not add a kensington lock. Not need much space...
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http://support.apple.com/kb/PH10725

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see thread
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http://support.apple.com/kb/TS2570
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Secuirty lock for macbook pro retina 15inch early 2013

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How to unlocked my macbook pro retina?

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