Power Settings: Make Monitor Turn Off Early

Hi,

Does anyone know of a keyboard shortcut or some such way to make the monitor turn off earlier than what the Windows power option setting does?

For example, I have my computer set to automatically power down the monitor after 10 minutes of inactivity. But, if I'm done using it for a while, before I walk away, I'd like to be able to do a (Windows key)-M, or something and have the monitor immediately power down. Why wait?

Thanks!