How can i reinstall Products again - as they are all corrupted and don't work ?

Hi i really need an answer to this- i had to roll back the regsitry becuase kept getting a blue scree as soon as the PC started (after i downloaded the creative cloud apps) - and now theres no entry on start menu for any cloud products and there are no .exe files either to run them - but the Adobe creative cloud application manager says they are all installed - so i cannot download them again ?    Even if i remove the adobe product folders - the application manager still says they are installed -

How can i download them again to the very same computer ? What is the application manager using to decide i have them installed on my computer- when in fact they are not?

I already raised this same question on the other forum but with no reply-

http://forums.adobe.com/thread/1100999 

so im trying here .