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Yes, I erased down to factory and installed Mountain lIon. LIke I said all works well when on the power cord. Without the power cord, even typing is slow. I have to wait for the letters to appear sometimes 1-3 seconds. Makes typing a pain.
I used the recovery disk on the factory page as directed. Not the HD.
After reinstalling MLion, everything worded fine until I tried to run on battery.
Just for your information, I have a 27" IMac, and iPad, and I Phone and and old 13" MacBook that still runs fine.
I did use disc utility before recovery. Not sure I can give you very technical answers, as I can only do what the computer ask. The main reason I like Apple is it walks you through almost everything.
I am about 11/2 hours drive from an Apple store, but perhaps I will need to go there.
I do appreciate your help
To answer a former question. Yes all data and apps were erased.
No mouse, using the track pad.