> What could be the cause of that?
I'm guessing it's a PEBKAC problem.
The chair in question being yours.
I guess now you know that editing registry is not just some "cover my arse" warning and it really does mean you can trash your system.
> and how to recover it?
If you're lucky - system restore
If you're not - find your install disks
Salem - "I'm fed up of all the 'I broke my system' please help" messages on the tech forum.
