i recently purchased a macbook air from online and it keeps getting the same march 24th, 2001 error everytime i turn on the computer. I'm guessing this has to do with the macbook's internal battery (similar to cmos on a pc). At first the machine was having problems even turning on, so i changed the power scheme on the laptop to something else so it would turn on more easily. And for some reason the battery doesn't seem to be charging even though it's been plugged into the power adaptor the whole day, it says only 10%. I changed the power scheme to best performance and that might have something to do with it, but before changing it to that, it would be so hard to wake it up from hibernation. and when it went to sleep, it just seemed to completely power off. please help assist in troubleshooting this as i am a mac novice.