MacBook Pro chimes and then switches off at boot

azurtem

macrumors newbie
Original poster
Apr 10, 2014
5
0
Hi

I have a Macbook Pro (MC374LL/A) which won't boot anymore

I followed the recommended steps in the following links:

http://support.apple.com/kb/ts2570

https://discussions.apple.com/thread/5391976

...but wasn't able to obtain any improvement

1) Safe boot doesn't work

2) Reset the NVRAM / PRAM doesn't work

3) Start up your Mac while holding the C key doesn't work

The DVD I manage to enter is immediately ejected

On each boot the grey screen lasts barely two seconds before the MBP switches itself off

Any ideas ?

thanks
yann
 

Mr Rabbit

macrumors 6502a
May 13, 2013
637
4
'merica
Could be a failed hard drive or hard drive cable, I've seen similar symptoms with those failures in the past.

Try this, power on your Mac while holding the option key, you should eventually get the Startup Manager, a gray screen with a list of available drives (yours might not show any) and a small box at the bottom where you can select a wireless network. If it can stay powered on longer while at this screen then you might try re-inserting the restore DVD and selecting it.

The train of thought is that the Mac is attempting to access the hard drive while it boots normally and boots to a DVD, at which point it fails to access it properly and shuts down as a result. You might also try removing the bottom case and disconnecting the hard drive, then attempting to boot to a DVD again. If it then boots then the hard drive and/or cable is the likely culprit.

Good luck!
 

iLog.Genius

macrumors 601
Feb 24, 2009
4,831
355
Toronto, Ontario
Had a similar problem with a MacBook in the family. It can only really be 1 of 3 things, logic board, HDD, HDD cable. Unfortunately for me, I tried swapping out the HDD and cable and the same problem occurred - had to assume it was the logic board.
 

simon48

macrumors 65816
Sep 1, 2010
1,315
88
Had a similar problem with a MacBook in the family. It can only really be 1 of 3 things, logic board, HDD, HDD cable. Unfortunately for me, I tried swapping out the HDD and cable and the same problem occurred - had to assume it was the logic board.
HD and HD cable issues don't seem likely at all with the DVD drive acting funny.
 

iLog.Genius

macrumors 601
Feb 24, 2009
4,831
355
Toronto, Ontario
HD and HD cable issues don't seem likely at all with the DVD drive acting funny.
The SuperDrive ejecting any discs are totally independent of the MacBook (Pro) not being able to start up, instead it's just either the CD/DVD can't be read or the SuperDrive is failing/dirty, which is not uncommon. As stated earlier, there are only those three things which can really affect the startup or operation of the MacBook (Pro).
 

simon48

macrumors 65816
Sep 1, 2010
1,315
88
The SuperDrive ejecting any discs are totally independent of the MacBook (Pro) not being able to start up, instead it's just either the CD/DVD can't be read or the SuperDrive is failing/dirty, which is not uncommon. As stated earlier, there are only those three things which can really affect the startup or operation of the MacBook (Pro).
Hell of a coincidence. And having a logic board problem can explain both issues.
 

azurtem

macrumors newbie
Original poster
Apr 10, 2014
5
0
unfortunately the MBP doesn't respond to anything
it just boots, chimes, grey screen, and 2 secs later switches itself off
 

johnnnw

macrumors 65816
Feb 7, 2013
1,211
18
Not good news. I'm going with logic board.

Do you have Applecare?

edit
Nevermind. 2010 model so I'm guessing no.
 

azurtem

macrumors newbie
Original poster
Apr 10, 2014
5
0
Thanks for all your help and suggestions

Finally, I took the logic board out and cleaned the large amounts of dust,

removed the radiator and cleaned (all) the excess cooling paste

Treated both sides to a clear vinegar tooth brush cleanup

Reassembled and, guess what ? It works !!!