How to disable Connected Standby in Windows 8?

Open regedit.exe, go to HKLM\System\CurrentControlSet\Control\Power\ and set the value CsEnabled from 1 to 0.

Source:

http://forums.lenovo.com/t5/ThinkPad-slate-tablets/How-to-disable-connected-standby/m-p/1367197/highlight/true#M27364


I believe also installing Hyper-V will disable it