I finally reinstalled the xp on the D drive.but didnt format so I dont loose data.ofcos the vista partition would nolonger be up,so i used ''easybcd'' to reenable vista and enable dualbooting. please what can I do to enable ''hibernating'' cos even the ''standby'' button is faded.meaning I can't put the xp partition on ''standby'' nor ''hibernate''. Thanx.

Check for updates and/or right-click on the desktop and check your power settings for standby mode

the "standby" button on the shutdown dialogue box suddenly showed up and the "advanced" tab on the power options dialogue also suddenly came up. hence I can now either put the system in standby or hibernating. thanks for all the efforts.