Chosen Solution
MacBook Pro “Core 2 Duo” 2.26 13" When pressing power button, it took a long time (about 5-8 seconds) to respond, and it beeps 9 times (3 short, 3 long , then 3 short) along with the white LED at the front of the machine blinks.
This is not a good error ;-{ Here’s an Apple TN on it: Mac computers: About startup tones “3 long tones, 3 short tones, 3 long tones: Indicates EFI ROM corruption is detected and the computer is in EFI ROM recovery mode.”
Try changing the RAM configuration. If you have two sticks, remove one. On the first reboot zap the PRAM by holding down the P, R, option and Command keys. Hold till it reboots twice and see if you now have a working machine. If so, replace the RAM.
The tones are heard as 3 short beeps 3 longs beeps and 3 short beeps. That is an indications that an EFI ROM corruption is detected. EFI chip must be replaced. Microsoldering skills and tools required. Look at this video https://youtu.be/qMxWBYBe-_g
