MacBook won't start up.

when computer is plugged in and powered off, hold down apple and option keys on left side of space bar and p and r keys. Keep them all pressed and hold them and push the power button, keep them down and listen for the boot chime to happen three times.

THis is resetting the pram or nvram.


Also try disk selct by holding down the option key or maybe try safe mode by holding down the s key.

Try to reset your SMC (System Management Controller) p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; color: #1a1a18}
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1. If computer is on, turn it off by choosing Shut Down from the Apple menu.

2. Connect power adapter to computer and to a working power source.

3. On built-in keyboard, press (left-side) Shift-Control-Option along with power button just once. Important: Use Shift-Control-Option keys on left side of keyboard.

Note: When the LED on the MagSafe connector is orange/amber, resetting the SMC will change it to green for a few seconds, indicating that SMC was correctly reset.

4. Wait 5 seconds and press power button to start computer.

If it starts without beeping errors reset the PRAM (Parameter RAM)

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1. If computer is on, turn it off by choosing Shut Down from Apple menu.

2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in Step

4. Note: If keyboard does not have an Option key, use Alt key instead.

3. Press power button.

4. Immediately press and hold Command-Option-P-R keys.

Important: You must press this key combination before the gray screen appears.

5. Hold down keys until computer restarts, and you hear startup chime a second time.

6. Release keys.

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To start up in safe mode:

Shut down your computer and wait 10 seconds.

Press the power button.

Immediately after you hear the startup tone, hold down the Shift key.

You should press the Shift key as soon as possible after you hear the startup tone, but not before.

Release the Shift key when you see the gray Apple logo and progress indicator (spinning gear).

Oh no, you got the spinning wheel of death!!
Take your RAM chips out and re-insert firmly and see if that don't do the trick. If not, then get gray disc 1 out of the 2 disc set. Put disc 1 into your laptop and let it load. Now power down with the disc still installed. Now press power button and let go and then press the option button until you see your hard drive icon and the install disc icon show up on the screen. The option button is on the left lower side next to the Apple button. Move your pointer over to the disc icon and press down on the mouse pad to select. Now press enter or move your mouse over to the right arrow and click on it. Your disc will start spinning and loading. Select English as the install or whatever language you speak. Then go to the top screen and select utilities and then select disk utilities. Now go look down and select the repair disc permissions and let the computer do it's thing. When thats done go over to the right side and select repair disc. When thats done you can quit and power down. Did that help any? Well then, select system preferences, accounts, select your account by tapping on it with the mouse pointer, select login items, now select each program in the box and press delete. Your not actually deleting the programs-your just preventing them from starting up when you power on, because they are resource hogs and not necessary for boot up. See if that don't do the trick. Still see the spinning wheel of death? Replace bad RAM chips with good RAM chips and make sure they are specific to your Mac. Anything? Well then, you will have to replace the hard drive and re-install the operating system. Still nothing? Afraid to say it old chap, but your fu.ked and in need of a new logic board. If your under warranty- just take it back to the Apple store and have the Apple dorks look into it.

Cheers old chap.

You need to start up in osx safe mode, and delete the application.
To start up into Safe Mode (to Safe Boot), do this:

1. Be sure the computer is shut down.
2. Press the power button.
3. Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone but not before.
4. Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).

It takes quite a while to start up.

Hi,
You need to reset the firmware.
Remove the battery, and boot up but holing the power button down until you hear a loud Beeeeeeeeep, and the lights start flashing. Let go, and wait.
Regards.

Make sure the MagSafe adapter is securely attached to the Macbook and free of debris.

There are two procedures that are advised by Apple to assist in resolving issues where the Macbook chimes at start up, but displays no video.

Here is the first procedure:
Here are some steps you can try to resolve the issue:

• First, hold in your power button for approximately 10 seconds to do a hard shutdown, if you have not already turned your Mac off.

• Once your Mac is shutdown, you will need to perform what is called a PRAM reset (Parameter RAM)

• Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously .

• Turn on the computer.
• Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.

• Now, hold the keys down until the computer restarts and you hear the startup sound for the third time.

• Release the keys and allow the Macbook to start up.

Observe to see if your Macbook will boot to the Desk top normally. If it does not, here is the second procedure:
-------------------------------------------------------------------
-SMC RESET-
The System Management Controller is an integrated circuit (computer chip) that is usually on the logic board of your Mac computer.

It is responsible for power management of the computer. It controls backlighting, hard disk spin down, sleep and wake, some charging aspects, trackpad control, and some input/output as it relates to the computer sleeping.

• If the computer is on, turn it off.
• Disconnect the AC adapter and remove the computer's battery.
• Press and hold the power button for 5 seconds
and then release the button.
• Reconnect the battery and AC Adapter.
• Press the power button to restart the computer

Update me if you require further assistance.

Regards,

-Mactechtrainer

If your MacBook is only four months old, it is under warranty. You can call Apple at 1-800-SOS-APPL and explain your problem, and they will walk you through a solution for free.

Sounds like it could be a corrupted OS; have you tried forcing it to start up with the OS disk, holding down the 'C' key? That's the first place to start...

If it won't start up like that, you probably have a hardware problem. (You can get excellent troubleshooting guidance at: http://www.ifixit.com/Guide/Mac/ ) depending on your level of geekness, and assuming the warranty is expired?

Good luck
dennismacfreak

Try starting in safe mode, this usually bypasses the graphics drivers, which could be in a funky state:
To start up in safe mode

Shut down your computer and wait 10 seconds.
Press the power button.
Immediately after you hear the startup tone, hold down the Shift key.
You should press the Shift key as soon as possible after your hear the startup tone, but not before.
Release the Shift key when you see the gray Apple logo and progress indicator (spinning gear).