Hi, I am running Windows XP Home Edition Service Pack 3. I use TuneUp 2008. I was do a clean up on the PC yesterday. Suddenly when I went to turn off the PC I noticed the the Standby button was greyed out. I have tried TuneUp restore and System Restore. I have tried all system restore dates. All System Restore failed. Any help with system restore or with the standby/hibernate button will be app.