0
Score
Kang
1
Asked
MBP can't boot (no chime, no display)
Hello Everyone,
Since three days, my Macbook pro is refusing to boot : I can see the front LED, ear the Superdrive start, ventilators and HD are started too; Then 10 seconds after, it reboots and does the same.
Display stays black, no chime too.
I replaced the two RAM sticks, tried SMC reset and PRAM reset (as I'm not even getting a grey screen, I think I tried that for nothing). I also replaced the Hard drive and disconnected the Superdrive.
Nothing! It keeps rebooting again and again...
Does someone have already seen that?
Thanks
Alex
1
Score
Alex Jansen
2.6k
Answered
What are you using to power the mac when this happens? This sounds like a power issue to me. Try removing the battery and powering off an AC adapter only. Make sure you are using an 85 Watt AC Adapter and not a 65W or less.
1
Score
mayer
121.8k
Answered
Try booting into Safe Mose by booting with the shift key held down.
Next try
+ booting from another LEOPARD device and applying the latest system update.
+ repairing permissions via disk utility
0
Score
machead3
12k
Answered
Try an
external display if that fails too you most likely have a damaged GPU or logic board.
If this answer was helpful please remember to mark it accepted.
Good Luck,
N