That's what I've been leaning towards... just kinda strange that the button works enough to power on the system, just can't power it off... I'll look for a port replicator that I can try out... if that's the issue I'll look for a replacement power button assembly. I was hoping there was something I ...

Sorry for not responding quicker... the board doesn't seem to be notifying me when I get a reply even though I have that option checked... Same behavior with or without the battery... I have to either shutdown via an OS shutdown command or I have to pull the battery or AC plug to shut it down forcib...

If I power the laptop on and go into the BIOS setup screen... I can't power the laptop off even at this point. This is before an OS even takes over power management. I just find it strange that the power button works to power it on but will not power it off... is there a different trace or path or s...

Yep. I've tried it both on On/Off and Standby.

I see a lot of people with issues with a T40 that will not power on... I have a strange issue in the opposite direction... My T40 will power on with the power button and everything runs great, but the power button will not shutdown the laptop. I can hold it in as long as I want to and it will not fo...