Quote Originally Posted by j.drake
Come to think of it, the problem started right about the time that SP1 came out (I remember having a devil of a time getting it installed). I'm going to check it out, and I thought you might want to as well. YMMV.
You might be lucky if the BIOS will fix it, but from my experience and all research I made it seems that it is more of a hardware problem. If you are good at soldering you might want to get the hardware fix from here http://www.vaioshutdown.com/