I had the Mac running the other night and it locked up (trying to get my internet working on it).
I tried to restart the system (pulled the plug then waited and tried to restart) and failure.
Monitor portion degauses and sounds like it is starting up. Power light comes on. No Boot Up and No HD Activity.
Here is what I have tried so far.
1] Swapped out the Battery - Still no Change
2] Tried the reset button on the board (Think its called the PMU Reset switch) - Still No Change
3] Removed the HD Ribbon Cable from the board and the drives - Now the HD Powers up but still no boot attempt no flashing icons on the screen.
The Screen remains Black.
Thank you for your time.