Wierd things when installing new games!

Hi guys,

Can anyone solve this problem. I recently bought a new PC with top end graphics card etc for gaming. I have installed a few old games on there but recently I tried to install Assassin's Creed but when I put the disc in it automatically redirected me to me Epson printer! Every time I tried this it did the same thing. I eventually explored the disc and went into set up from there and the game now works fine. But yesterday I bought Lost Planet Colonies Edition and it has sone the same thing again.

Why is it doing this and how can I stop it?:confused