HELP! Must shut down Powermac G5

[ShermDog]

I recently purchased an Apple wireless keyboard and mouse for my Powermac G5. Since then, I've been getting the following message on my screen whenever I wake my computer from sleep in the morning (I put it to sleep overnight): "You must shut down the computer. Press and hold the power button on the computer". The screen dims a bit, and I can't control the mouse or keyboard. This only happens when the computer has been asleep for at least 8 hours. My firmware and BT software is up to date.

I don't know if the wireless keyboard and mouse have anything to do with this, but I didn't start getting the message to shut down the computer until a week after I started using them.

 

[jsw]

The first thing I'd do is plug in the old keyboard/mouse and remove the BT dongle (if it isn't internal) and see if the problem continues. At least then you'll have a better idea of what the culprit might be.

Then I'd call Apple. You are likely still under warranty.