Windows 8 and Wake on Lan

Wake on Lan (WOL) issues with Windows 8

Wake-on-LAN behavior in Windows 8
http://support.microsoft.com/kb/2776718

Windows 8:  In Windows 8, the default shutdown behavior puts the system into hybrid shutdown (S4) and all devices are put into D3. Remote Wake-On-LAN from hybrid shutdown (S4) or classic shutdown (S5) is unsupported. Network adapters are explicitly not armed for Wake-On-LAN in both the classic shutdown (S5) and hybrid shutdown (S4) cases because users expect zero power consumption and battery drain in the shutdown state. This behavior removes the possibility of spurious wakes when explicit shutdown was requested. As a result, Wake-On-LAN is only supported from sleep (S3) or hibernate (S4) in Windows 8.

To resolve this follow the below steps

To disable hybrid shutdown (S4) in Windows 8 (not recommended), use these steps:

1. Open the Power Options in Control Panel
2. Select “Choose what the power buttons do”
3. Uncheck “Turn on fast startup (recommended)"
4. Select "Save Settings"