Password required instead of clicking " yes ' ot " continue "

You should enable the policy "User Account Control: Use Admin Approval Mode for the built-in Administrator account", and then you must configure the policy "User Account Control: Behavior of the elevation prompt for administrators in Admin Approval Mode" to use either "Prompt for credentials" or "Prompt for credentials on the secure desktop". Note the behavior of this last item depends on how you've configured "User Account Control: Allow UIAccess applications to prompt for elevation without using the secure desktop" or "User Account Control: Switch to the secure desktop when prompting for elevation" - I personally don't like using the secure desktop with a multimon setup, so I disable "User Account Control: Switch to the secure desktop when prompting for elevation" on my machines. All of these policies are in GPEdit > Computer Configuration > Windows Settings > Security Settings > Local Policies > Security Options. If you're using a version of Win7 without a local policy editor (your specs say Win7 HP, so it's possible) all of these settings are backed by registry values, documented on Technet here.

Yes, just use the registry locations (from the linked Technet article) to set the appropriate values instead, and reboot.