From time to time to onboard motherboard chip that controls the power functionality of a Mac can become unusable. This can create problems with waking a Mac up from sleep and sometimes no power-up at all. One way to fix this is the following:

1. Unplug the power cable/take out the battery pack
2. Hold the power button in for 5-10 seconds
3. Replug in the power/reconnect battery pack
4. Turn on the Mac

You should now see the power functionality return to normal.

This entry was posted on Sunday, January 13th, 2008 at 7:27 pm and is filed under Apple. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.