OK, the misery of the
HP laptop continues.
In hibernated mode, picked up the laptop, open the lid, tap the power button and the lights come on then the lights go off. Followed by the fan and the screen. Try the power button again - nothing.
Power is still getting into the machine - the power indicator works.
Power does not appear to be getting any further. Bugger.
(That's a nice present on my birthday isn't it!)

Only option now is to remove the hard drive and take the disasterous road labelled "Customer Service" as it's under warranty. (That way I can avoid having to revoke my laptop key - it's not my main key but it's got a lot of signatures that I'd rather not loose.)
Damn and double damn. Waste of money, feeling miserable and $%^@& annoyed. I'm almost tempted not to bother getting the useless thing repaired.
So, I'm back on my iBook laptop which will probably now have to go back to running unstable.