Not Open The Control Panel Section For Creating A New Account?

1) Asus Laptop Model UL50VT with Windows 7 Home Premium. 2) Hard Drive crashes dies, send it in and get it replaced. 3) Several months after getting the Hard Drive replaced (Yesterday) I noticed that my D drive had 350GB of memory as compared to about 150GB in my C Drive. This was a problem considering my C drive was nearly full.4) I decide to just put new files to the D Drive and that I will copy files over to the D drive to use it as my primary driver. I use Yahoo!Answers as my reliable source of information on all things registry. After following the instructions that I can no longer find, I edited several files in the registry, believing myself to have changed the primary drive from C to D.

5) ^^ The above instructions given were most likely from an epic troll. Everytime I open any System 32 file I get an error that Windows cannot C:/Windows/System32/Application I tried to open/etc... This includes, sadly, my regedit application.6) I copied my System32 folder over to my D drive and attempted to open the application from over there, but it has not worked.7) Many files on my computer are unable to be found by windows, System32 is not the only case. It appears to be somewhat random8) I tried as a cop-out way to fix this to create a new User Account, and that also failed... It simply will not open the Control Panel section for creating a new account.9) Lastly... and perhaps this was my stupidest mistake of all... I never created a recovery disk.