Windows wakes up?

[Den]

Windows keeps waking it self up from sleep or hibernate, any thoughts?

[Simon]

Give it a stiff drink before bed? 

I think there's somewhere in Control Panel > Power Options where you can disable it from waking up.

[pctech]

Control Panel > Power

Click Change Advanced Power Settings

Expand Sleep and set Allow Wake Timers to Disable.

[Steve]

Either that or some other networked device is waking it up. It should be in the logs somewhere.

[Technical Ben]

Yep. Network or USB waking it up. Sometimes an old mouse or USB hub could set it off.

[Den]

Control Panel > Power

Click Change Advanced Power Settings

Expand Sleep and set Allow Wake Timers to Disable.

Thanks every one, that seems to have done the trick