2009 MacBook Pro 13" boots to white screen even after SMC/NVRAM reset
Hello all, hoping someone can shed some light on this issue.
I currently have a 2009 MacBook Pro 13", 2.26Ghz model that boots to a white screen only.
Here's is the scenario:
From a cold boot, pressing the power button lights up the sleep indicator light, then I hear the normal boot chime. The sleep indicator light then goes out, and the MBP then immediately displays a plain white screen, no Apple logo, no folder with a question mark... nothing. Just plain white screen.
I have attempted SMC Resets, NVRAM resets, have replaced the RAM with known working RAM, and replaced the hard drive with a known working drive.
Booting with C, D, R and any combination of these keys with the Option key produces the same white screen. Trying to boot to Safe Mode produces the same result. I have hooked up an external USB drive (which I know works as it booted my Mac Pro 15 minutes ago), and held down the Option key after I pressed the power button, and the same white screen appears...
I never see the Startup manager appear giving me an option to boot from the external drive. The power LED light on the external drive blinks 3 times when I press power on the MBP, then glows solid afterward, so I know it is receiving power and I can hear it spinning up.
The MacBook Pro seems to charge OK, as the magsafe adapter light glowed orange for the entire time I charged the battery (about 1.5 hours) and then changed to green once the battery indicator lights on the side of the Macbook Pro all turned solid green.
The MBP also boots (albeit to the same white screen) when using just the battery. The MBP seems to behave as it should when an SMC Reset is performed (status light on magsafe adapter changes color), and NVRAM resets also seem to have the desired effect, as the MBP will continue to reboot as long as I hold down the proper keys. One odd thing that might be worth mentioning is that in whatever configuration I try, as soon as I press the power button on the MBP, I do not hear the optical drive spin up, which usually precedes the boot chime. Of course the optical drive may be dead.
I'm at a loss here. Any help would be appreciated.
So to sum up: MacBook Pro 2009 13.3" 2.26 GHz model, always boots directly to blank white screen
- 4 GB of known good RAM
- 250GB known working hard drive installed
- Working battery and MagSafe power supply
- At least 20 SMC resets performed
- At least 20 NVRAM resets performed
- Attaching external hard drive produces same results as trying to use internal HD
- Option-D produces no results
- Option-R produces no results
- Safe Mode produces no results
Esta é uma boa pergunta?