The computer does not sleep under orders of Power plan. After pressing the button sleep the computer falls asleep, but wakes up in 2-3 minutes. In system Vista on my computer sleep mode worked well.

There are some known issues in this build of the beta, you might want to try any of the following solutions.- Disable the automatic scheduling of Windows updates. Control Panel -> Windows Update -> Change settings -> Important updates: Never check for updates. -> Press OK.- Disallow hardware (like your network adapter) to wake up your computer. Control Panel - > Device Manager -> Network adapters -> Right click on a network adapter -> Properties -> Power Management (tab) -> Uncheck 'Allow this device to wake the computer' -> Press OK.

Hi, You can refer to the following link: http://social.technet.microsoft.com/forums/en-US/w7itpromedia/thread/603ece15-7243-4b57-a3ae-91597a65f9e0 Hope it helps.