Chosen Solution
Problem: I press the power button, the boot sounds, white screen with apple logo shows up, process bar moves and the “wait” symbol turns around. However, when the process bar moves to about 15%, it disappear. And then computer turns down. It won’t boot to OS. I press the power button and the Mac goes the same loop. Specification: MacBook Air 13" Model: A1369 CPU: Core 2 Duo 1.86 GHz Flash: 128 GB What I have tired:
- I tired SMC for few times, but it did not work out.
- ⌘-⌥-P-R to reset, but it did not work out. Can anyone help me to find the root cause of this issue? What else I can do to fix it? thank you!
Sounds like a corrupted system folder or an incomplete update in progress and looping. Try starting up from your original system installation disk and running Disk Utilities on it to repair the system.
Are you able to safe boot your system? If it does you can run disk utility to check your disk permissions. However, in case it is beyond disk utility repair then try to boot it with the installation disk that came with the Mac.
If nothing happens when you push the power button, it generally is one lousy drop of fluid that hit that button. They are very sensitive to liquids on them. Nothing happening is not the same as not booting, and if you get no reaction at all, it is an issue with the power button. No boot disk can help you then, and the upper unit needs to be replaced.
