Just go into your registry and do the following

[HKEY_LOCAL_MACHINE\Comm\AsyncMac1\Parms]
Default value type and value are
“DisablePowerManagement”=dword:1
Change to
“DisablePowerManagement”=dword:0


[HKEY_LOCAL_MACHINE\Comm\Irsir1\Parms]
Default value type and value are
“DisablePowerManagement”=dword:1
Change to
“DisablePowerManagement”=dword:0


[HKEY_LOCAL_MACHINE\Comm\PPTP1\Parms]
Default value type and value are
“DisablePowerManagement”=dword:1
Change to
“DisablePowerManagement”=dword:0


[HKEY_LOCAL_MACHINE\Comm\L2TP1\Parms]
Default value type and value are
“DisablePowerManagement”=dword:1
Change to
“DisablePowerManagement”=dword:0