In reply to markAut:
I appreciate all that and would normally agree, but it's my elderly father's laptop and he keeps forgetting the password. For that reason I thought it would be simpler just to have him able to switch on and get browsing without the added faff of logging on. He never takes the laptop out the house and, unless the place is burgled, I figured it should be pretty 'secure'. It's not even as if he has anything of importance on it even if it were to be stolen.
I've now found out how to remove the password, but can't actually do that till we get a password reset from the backup email address!
Thanks again for your comments.