A1260 fan starts + latch LED lights, doesn't boot, no sounds
My trusty A1260 / EMC 2198 with last 3 serial YJZ is misbehaving.
After leaving it alone, lid closed, nothing plugged in except power, for a couple of days, I came back and found the front latch LED glowing a steady white, could hear the fans running and it was quite warm to touch (though no more than usual when its running - it was in a well ventilated spot).
I opened it and the screen was black and the keyboard lights / volume buttons had no response. I held down the power key and after ~5s everything turned off. This happened once a couple of days ago, but it powered up as usual without problem. But not this time.
I tried to boot as usual, and the following happens when I press the power key:
- fan starts
- CD drive makes a noise (I think, possibly HD?)
- front latch LED goes white (at half brightness)
The screen does not light up, and nothing else happens after this point. I can power if off again by holding down the power button for 5s.
Things I've tried:
- reseating the RAM cards
- booting with/without the power attached
- removed battery, held down power button (SMC reset?)
- booting with no RAM -- exactly the same as above
Any suggestions on next steps / tips are much appreciated!
Edit: I just noticed that if its in the zombie state, when I close the lid the latch LED goes from subdued white to bright white (steady in both cases, not flashing). If I re-open the lid, it goes back to dim. Not sure if that's a clue? I've also hooked up an external display - nothing shows there.
Your machine has the GeForce 8600M GT video chip that Apple has a recall on. If you were getting any artifacts on the screen before it failed you may be able to get it fixed for free. They will balk if the screen is totally black. I would read through the questions on this site on the nVidia 8600 recall. Here's Apples notice on it: http://support.apple.com/kb/TS2377
Sounds like you have some malware on your system or some other app is not following the rules when the system is in sleep mode (closed lid or via menu). Now your OS/HD is corrupted.
You need to boot from a Mac OS-X CD/DVD or a bootable external HD. Once you have you should be able to use disk util from the menu to check your HD and make any needed repairs. If you can run a current version of anti-virus it should be able to remove any malware. You may need to re-install your OS otherwise.
Once your able to reboot under your internal HD make sure you've run the Mac Update service so your OS is running the most current security updates ASAP.
If you can't access your internal HD at all from booting up under the Mac OS CD/DVD or external HD, or disk util reports the disk can't be repaired you'll need to replace the HD.