I am currently using Outlook Express as my e-mail application. I am running a Sony VAIO desktop computer /Pentium 4 processor running @ 2.5 gig. My operating system is Microsoft XP/SP3. I use Firefox as my browser. Recently I have been unable to get my desktop to either Standby or Hibernate. If I try either, after a few moments the computer will have turned itself back on. No manner, at least by me, of fiddling with the power settings in the Control Panel seems to have no effect, whatsoever.