G5 dual 2ghz.  Been unplugged for a while. Powers up but no video or power to usb keyboard.  Boots up fine in safe mode, restart into normal mode ok. After shutdown, back to same issue.  What's happening?

G5 dual 2ghz.  Been unplugged for a while. Powers up but no video or power to usb keyboard.  Boots up fine in safe mode, restart into normal mode ok. After shutdown, back to same issue.  What's happening?

I keep seeing people ask and the advice to replace if it has been unplugged, but really have nothing to confirm that from my experiences.
My experience is that a weak or dead battery can cause much more than date and time issues.
I have seen it time and time again.
Deal with used machines and you will quickly learn....
I'll give no "recipe" or set list of symptoms, but the range of irregularities that can occur make it a quick and easy first line of troubleshooting, especially when the machine has been off the mains for a few months.
Why fight mysterious maladies and troubleshoot with the knowledge that the PRAM battery is beyond it's useful life.
Maybe they recharge?
Not likely. They are chemically nasty, disposable, one way discharge batteries.
They aren't Lithium-ion batteries

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