Heya Anthgav,
If you have your unit plugged into the internet via a ethernet cable, try this:
1. In control panel, go to network connections
2. Right click on your local area connection, click properties
3. Click configure beside your network adapter
4. Click advanced tab
5. Look for a Wake On Lan setting and disable it
If there isn't a setting for it there, try looking for a Wake On Lan setting in your BIOS. That is a fairly common cause of your problem.
Hope that helps!
