It can not be said enough, so this is a friendly reminder.
[color=FF0000]Check your Amiga RTC battery!![/color][/b]
Many a Amiga will die from this common problem. These batteries WILL LEAK, it's not a maybe, they WILL!!! They will destroy the motherboard.
If you are not comfortabe with a soldering iron, bring your computer to someone who is.
This has been a public service announcement :-o