Hi. I'm a new member, totally a noob here and sometimes tech dumb (which is why I have a mac in the first place). Lately my mac started to not wake from sleep. I can click the keyboard, swipe the trackpad, and try to hard reset the power button all I want, but nothing works. Generally, I close it and put it aside for a few minutes, then pick it up and try it all over again until I get *some* sort of response. It's taken several minutes of this where before it was immediate to sign in and start up. Usually, I only sleep the computer. I'm going to shut it down tonight and hope it lives again. Last time I was in a mac store, they said my battery needed servicing, but that it wasn't so bad that I needed to replace it immediately (and I didn't want to cough up the $120 either). I haven't myself noticed an appreciable difference in run time. I'm leery about the PRAM memory shortcuts, since I'm not sure what they do yet, so I've not tried them. I have a great deal of sensitive material on my mac that I absolutely cannot lose, even when I'm keeping up with harddrive backups. People who know computershalp.