You don't even need to do that. There are ways of just deleting the Windows password from outside of the system. I'm 100% positive that I've done it a long time ago with Windows 7.
Do what? This is what I was referring to in my post... there are ways to get around the password issue, depending on the version, I should be able to give instructions... or everyone can just google it.

Edit: @Lauda, I see the confusion, I was giving 2 methods of recovery. But yes the easiest should be clearing/resetting the password assuming there are not other factors involved (I'm leaving information out of my response on purpose... I don't want to give out excuses or reasons, just want the truth). I'm not 100% sure if it is even the password that he's claiming is the issue because his last post seems to be altering what the issue may be. Hopefully the story doesn't start changing!
