Maybe your drive is not the correct one! I would browse and click on the drive again to see if it helps.
Well from the screenshot looks like you got the install to start. I would say buy another copy " " of it. Could just be a bad disk you bought
ok just take everything photoshop off ur comp do a remove programs and then do a search of ur system through run i had sumthin like this happn to me and i just took everything off my system and it worked fine the next time