Sleep/hibernate function on my laptop isn't working...

[ct2k]

Yeah it just shuts down and restarts on the unexpected shutdown menu, this happens when I close the screen at any time too.

Thoughts?

Its fairly new btw, Vista too, if thats relevent

[CSL]

Have you changed the settings in Power Options?

[ct2k]

Power options are all set fine:-\

[DMI]

mine has only done that when my kittens unplug it somehow and its running off battery