Rick DuCharme

When I start my iMac 7,1 I see a display Low Battery below the sign in block. What does this mean? and what should I do...

My iMac is making a continuous surging fan sound. Also, It does not shut down properly. I have to hold the power button to...

Thanks Jeff, I suspected that this might be the case since, I've had several power outages. I only have a surge protector, but am about to invest in a good countinuous power supply. Do I need to take my iMac to an authorized dealer to have the power supply replaced? Rick Ducharme