Big problem with permission

I recently right clicked on my c drive through my one and only account and went into security > advanced > owner > edit and changed the ownership 2 my account after that it has all been a mess, i cant uninstall any program, cant open regedit dont have rights 2 do anything on mu computer....HELP!!!

I've just built a new PC and I've got an old harddrive from the old build in which windows 7 home premium is installed and requires password every time I login to windows but I forget to backup something left on the desktop of the "old" windows 7 Now I am enjoying the new build but how can I...

I know there were many question like this before And, i almost have tried everything but still it's not solved it I have tried the way from SECURITY tab folder It helped in most folders but not everything and sometimes it got messier where i can do anything cept read Even though i'm the...

I have two external hard drives hooked up to my computer once Lacie 500G external which works fine and a Seagate Expansion 1.5TB which is being a pain in the ass. It was working fine when I was running on 32bit Windows 7 but I recently reformatted and switch over to 64 Bit and now only the folder...

I did something to a folder a while ago and I don't really remember what I did to it, but now whenever I try to open it or delete it, it gives me a access denied, saying I need administrator permission. But the thing is I am the admin and I tried a bunch of things and still can't do anything with...