2007 MBP restarts instead of shutting down

[Skibsted]

Hi Guys,
I have a Macbook Pro from 2007 (aluminium keyboard).
Everything was working great until a couple of days ago, when I replaced the battery.
No every time I choose to shut down the computer, it will restart and NOT shutdown. I have tried several things - the only thing that seems to work is to unplug the power chord - then it will shut down, but if the power plug is connected, the computer basically can't shut down - it just restarts.

Any thoughts?

 

[spinnerlys]

What about this: Intel-based Macs: Resetting the System Management Controller (SMC)?

 

[Skibsted]

What about this: Intel-based Macs: Resetting the System Management Controller (SMC)?

Thanks, I'll give it a try.