Cannot access Win 7 OS asking for P/W that I never created!

On my dual boot system while trying to get into SAFE MODE in 7-64 I made the mistake of hitting F-8 repeatedly. Now I get a screen with my name on it in the center and it's asking for a P/W. When I built the machine I never entered one because I am the only user. I have tried all the P/W that I can think of and no joy.

I made an image of the OS that currently has me locked out.....

So then I installed an earlier image of 7 and made a password recovery disc. Then I re-installed the fluky version of 7 and tried to run the P/W disc. Now I get a message saying " An Error occurred while trying to reset the password!" REALLY?

Since the machine is dual boot I am wondering if I can change the p/w on 7 from within XP?
I thought I might be able to access the 7 registry and change it from there.

I know there are P/W recovery programs but I am not sure that I can get Win 7 to boot from a CD since the configuration is dual boot. And if there was no original password what can I recover anyway?

In a worst case I can install an image from June and then mount the current one and xfer files over to it that way.

I don't understand why hitting F-8 made the system constantly pester me for a password!!

Now that seems to be the default: IE: Ask for P/w


Any other ideas?

Thanks to all in advance!

Did you try just hitting enter with no password?

That should let you in!