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Mkuser Author

Level 1

0 points

MBP mid-2010 i5 fails RAM test at POST before and after replacing the ram

So in january my MBP started to fail to boot. (in july of the year before the logic board was replaced)

The LID flashed once it seems to click and then nothing, only after a few tries(between 5-10) it would boot.

A few months later it got worse sometimes didn't boot after hours of tries.

then i switched the RAM modules with each other, And it got better until a month ago.

Yesterday it booted only after an hour and a half of tries (connected to the charger and clicking one time to start trying to boot)

Today i bougth 2 corsair 4GB 1066 Mhz ddr3... replaced the old ram and it was the same it didn't boot after a few minutes of tries.

i tried each of the new RAM on each slot and the old ones, everytime the same.

then with the 2 new modules i tried to boot with OPTION COMMAND P R and after a few times it booted it worked fine recognized the 8GB.

did about 2 or 3 shutdowns to check if it booted, it was fine. then after a few minutes i was going to work on it tried to boot and the same happened blink and nothing. tried with OPTION COMMAND P R (after 3 or 5 tries) it booted.

I didn't try to reset the SMC yet for the lack of the proper screwdriver. but could it fix this?

From everything that i read it seems to be the ram test at POST.

MacBook Pro, OS X Mountain Lion (10.8.5)

Posted on Nov 30, 2013 4:26 PM

17 replies

LowLuster

Level 6

12,105 points

Dec 1, 2013 8:14 AM in response to Mkuser

Like I said in an earlier post. The Logic board is Bad and needs to be replaced. Since you just had this done it should still be covered under a limited warranty. The longer you keep fooling around with it, swappiing RAM in and out, the more chance you have of doing some type of physical damage to it that will not be covered by that limited warranty.

Take it in and get the board replaced.

Mkuser Author

Level 1

0 points

Dec 5, 2013 8:46 AM in response to LowLuster

I'm sorry to be this stubborn but could this happen to the mbp because it is under the operating temperature?

Another factor could be that this happens on winter.

the mbp at night is in a room that can go below the 4ºC. the operating temperature being 10ºC could this be it?

I'm insisting on this idea because the simptoms, if i can boot one time ( it doesn't matter how many failed tries passed) it will boot and reboot normally for sometime.

Thanks

MBP mid-2010 i5 fails RAM test at POST before and after replacing the ram