2002 G4 Won't Turn On

Hello, folks.

So I just got back from being out of town for six weeks and was surprised to find that my 2002 G4 desktop wouldn't turn on. When I pressed the power button, it would light up, but the computer would not start.

I recalled having an issue with this model where the battery had died, so I went to an electronics store and bought a new 3.6v battery.

This changed things: the computer will now begin to power up, make the start up sound but, before the monitor comes on, it shuts off again.

Any ideas? I took it to a Mac specialist and they said they don't service "antiques."

Try resetting your PRAM.

Resetting your Mac's PRAM and NVRAM

It worked

You are a god amongst mortals. I praise your exalted name. I shall renounce all of my material possessions and make a holy pilgrimage to Nepal. Upon arriving, I shall begin the immediate construction of a monastery upon the windwhipped slopes of a foreboding mountain. There, for generations following shall my disciples tell and retell the holy gospel of the time you fixed my computer.