I can't install Alcohol 120% 1.9.6.4719

Hello :
My OS is Windows Vista Ultimate RTM version and can’t install Alcohol 120% 1.9.6.4719 (last version)
The setup ask me : "You must restart Windows and continue installation after reboot.
Would you like to restart now?

I click in OK = Yes = Aceptar (spanish), the system reboot and soon the system initialize and continue the Alcohol installation, but …
again setup ask me : You must restart Windows and continue installation after reboot.
Would you like to restart now?
And never continue with installation, because this problem loop again and again, ask me for reboot. :confused:

Please help me … I’m very sad :sad: :sad:

Try disabling any AV software. Also try running as Administrator or from the actual Administrator account. If that doesn’t work, try booting into Safe Mode and running setup.