Mid 2009 Model A1278 / 2.26 or 2.53 GHz Core 2 Duo processor EMC 2326

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doesn't wake up after closing the lid

Hi guys !

recently after i close the lid of my macbook pro 13" when i open the lid computer doesn't wake up from the sleep. i have done all the SMC reset , NVRAM , PRAM , fresh install the OS and none of them work . so u i have to hold teh power button in order to turn it on back again. what could be the issue ?

Answered! View the answer I have this problem too

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You could damage your HD if you continue to crash (force start) the machine. Every time you catastrophically, instead of gracefully, shut down the drive you fragment the MBD. Do that too many times and it will not recover.

You haven't mentioned the OS. You haven't told us if you've been inside the machine and didn't reassemble the sleep magnets correctly. Two pieces of information we need to offer successful solutions.

Follow the tags at right for some steps to check.

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hi there

thanks for your reply

i have tried installing mountain lion and Lion to see if it can fix the problem but it didn't . currently the machine is on lion . i have opened the the bottom cover but i just removed the battery and put a new battery but it didn't fix the problem . i have no idea where those sleep magnets are located can you explain further.

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Actually I'm having the same exact problem. My Mid-2009 MacBook Pro 13.3 inch goes to sleep permanently after closing the lid. I will open the lid up and the light is still pulsing, but when I click the power button nothing happens. I have to hold the Power button until he machine has turned off, then click it again, sometimes for some odd reason it will continue with resume, or it will re-boot. I have already reset the SMC, and PRAM. No luck at all. Once the lid is closed you can't have it recover from sleep mode by pressing a key or clicking the trackpad.

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The problem may be due to SafeSleep, which is enabled by default on Macbooks and causes the laptop to write out the RAM to disk when put to sleep. Try turning off SafeSleep and see if that helps. My 2011 Macbook Pro started hanging occasionally when closing the lid after I upgraded to 8GB RAM, and turning off SafeSleep seems to have stopped it.

How to Turn off OSX SafeSleep

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I have the same problem as Jabran. Have confirmed that resetting SMC, PRAM, reinstalling Mavericks did not help.

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Without connecting your system to an Ethernet or WiFi network, see if the date & time hold and are correct (you don't want your system to access the internet time server). If you are loosing time or the date rolls back the PRAM battery is dead. Depending on your model it could be a discrete battery, capacitor or clock unit soldered onto your logic board.

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Yes Dan,

The date does roll back.

I know these are different from the old days of seeing a battery that I can replace. Will this discrete battery, capacitor, clock unit need to be soldered on?

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Can you give us the last four digits of your serial number so we can narrow down which model you have.

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The last 4 digits of the serial number of the laptop is 966H

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