HOW TO REINSTALL ARMA, I need help on uninstalling arma Options

[triggerpuller101]

So here's my situation. Over the past few hours I have been trying to reinstall arma. After making sure I deleted every trace of arma including the Atari folder, I attempted to reinstall it. Whenever I try to reinstall it, there is a pop-up that states "arma: combat operations is already installed. Would you like to reinstall Arma? Yes or no" I click yes. Arma is then installed. When the installation is nearly complete, when it reaches the final bar, it stops on saralite or a vehicle pbo (you can see the pbos being installed into your arma directory under current progress) and freezes. I then abort the installation and try again. The same thing keeps happening. It progress bar(green one) reaches near the end and stops and doesn't continue. What is the issue and how can I fix it? I can't seem to reinstall arma. Is there a unistall I can use to delete all traces of arma? Thanks in advance.