My car won’t start, no accessories will work but battery is charged what’s wrong

What is your question?

I have checked the battery it is fully charged, all the visual fuses I can check by eye are fine. No clicks when I turn key, no devices work not even lights or blinkers. Anything you could suggest I try or think it is? Thanks

What makes this problem better or worse?

N/a

How long has your 2004 Oldsmobile Alero had this problem?

It just happened without warning