The following document from Microsoft discusses the difficulties for Wake on LAN in Windows 8.
Windows 8 and Windows 8.1
In Windows 8 and Windows 8.1, the default shutdown behavior puts the system into the hybrid shutdown state (S4), and all devices are put into D3. WOL from S4 or S5 is unsupported. Network adapters are explicitly not armed for WOL in either S5 or S4 cases because users expect zero power consumption and battery drain in the shutdown state. This behavior removes the possibility of invalid wake-ups when an explicit shutdown is requested. Therefore, WOL is supported only from sleep (S3) or hibernation (S4) states in Windows 8 and 8.1.
When turning off the system your are actually hibernating (S4) the system by default. Before the system powers down it writes used files to disk to speed up the next boot. Microsoft gives directions on how to turn off the S4 state but doesn't recommend it. I haven't tried this before myself so I don't suggest it either, but it may be of some help if you absolutely must have WOL.
DELL-Terry B
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March 19th, 2015 12:00
The following document from Microsoft discusses the difficulties for Wake on LAN in Windows 8.
Windows 8 and Windows 8.1
In Windows 8 and Windows 8.1, the default shutdown behavior puts the system into the hybrid shutdown state (S4), and all devices are put into D3. WOL from S4 or S5 is unsupported. Network adapters are explicitly not armed for WOL in either S5 or S4 cases because users expect zero power consumption and battery drain in the shutdown state. This behavior removes the possibility of invalid wake-ups when an explicit shutdown is requested. Therefore, WOL is supported only from sleep (S3) or hibernation (S4) states in Windows 8 and 8.1.
When turning off the system your are actually hibernating (S4) the system by default. Before the system powers down it writes used files to disk to speed up the next boot. Microsoft gives directions on how to turn off the S4 state but doesn't recommend it. I haven't tried this before myself so I don't suggest it either, but it may be of some help if you absolutely must have WOL.
TB