Lets discuss quick way to repair slow working or moderately bugged Windows here.  First I would like to tell that there is crowd of windows repair utilities available on the market today, free and shareware. But the truth is most of them are dangerous to your PC and can bug it even more. I've used many of it, mostly free ones. And then did complete re-install of Windows since it was locked completely. So my final solution is to use 2-4 programs that proved themselves in most cases. Here is my list of such Windows repair tools:  #1 RegistryEasy #2 RegistryCure #3 RegistryMechanic #4 RegistrySmart  First 2 programs available at  http://repair.repairandsecure.com .  And you can find other 2 at Download.com do not wish to post multiple links here.  Regards, Carl