I have serial number and registered copy of Photoshop CS6 extended and got a new laptop that does not have a diskdrive. I have signed in and the product does come up as I own it but....I cant seen to download it at all and type in my serial number a

The installation files for CS6 and older versions can be found at Other downloads.

If you have migrated/copied/transferred your applications from one computer to another then it could cause any serial number entered to be seen as invalid.  I would recommend using the uninstaller appropriate for your operating system and then reinstalling.

I have exactly the same question - I am trying to put the Illustrator CS5 and also Photoshop CS5 Extended and get a reply that my serial number is correct but I can not download because I do not have the appropriate ap on my current computer..... Hoping someone can tell us how to do this