fobs,
I tried the msconfig settings, that made the machine re-boot on restart which I've seen on the other threads is caused by the disable fast shutdown setting so there's some connection there!
Richard,
Power management is ok and my board is a Matsonic 8308e with an AMD K7 Athlon 2000 chip.
While I was checking the msconfig settings, there were quite a few gaps in the listings which were highlighted but blank when clicked which doesn't seem normal to me.
3 months ago I replaced my main hard drive and I used a ghost utility to save me downloading all the useful little programs again - I thought that this had been sucessful but now I'm not so sure. The machine has been doing odd things like changing the clock speed and video settings which I just put down to Windows doing its exasperating stuff, but as James Bond says, "The first time is happenstance, the second time is coincidence, the third time is enemy action".
I think it's time for a rebuild