Led comes on but doesn't boot, screen and keyboard stay black.

Laptop was working fine, shut the lid then next time I opened it nothing happened.

I tried holding the power button to shut it off.

If I press the power button to switch it on the led on the front of the case comes on, so does the fan, for about 5 seconds. Then 5 seconds later they both come back on again but nothing else happens. No screen, no keyboard back-light.

I've shone a torch through the back but there's nothing happening on the screen so it's not booting.

The battery charges fine, I've tried a SMC reset and I see the led on the magsafe adapter change colour.

I've swapped the ram with a spare set but no different. I've removed the hdd and that works OK on another machine.

My guess is the logic board has gone but interested in any other suggestions. I read somewhere that the fan wouldn't come on if the logic board was faulty but not sure if this is correct.

Contesta esta pregunta Yo también tengo este problema

Es esta una buena pregunta?

Puntuación 0

2 comentarios:

I see you've done an SMC reset, but did you also do a PRAM reset (Ctrl Option P and R keys)?

If that doesn't work, hold down option and S at start up to try going into single user mode, see what happens?

- de

Thanks for the reply, tried both of those but still nothing

- de

Agregar un comentario