Ok, so long story short, I was having trouble creating a new Steam downloads folder on my C Drive so I thought changing my Permissions would help. Anyways, I right clicked on the drive, clicked on Properties, clicked on Security, and then I clicked on the Administrator tab. I proceeded to check all of the boxes and I applied. Well, after testing to downloads in Steam, I saw that what I did had really made no difference and I had found the actual problem and fixed it. I then thought it might be a good idea to reverse what I had done in the Security Settings of my C Drive. So I went back in to properties, clicked on Security, clicked on Administrator, unchecked the boxed for permissions, and hit ok. After I hit OK, it popped up with a few different warning signs, such as I might not be able to access certain files, this decision could compromise the security of my Computer, etc. Basically, it just said what I had done was NOT a good idea, after I already unchecked the permissions. After it was done, the Administrators tab completely disappeared and I couldn't access any of the other permissions anymore. I know this is a very lengthy question, I am just not sure what I have done, and I want to restore it to how it was before. I get easily worried about these types of things. Is this a big deal? Should I still use my PC in the meantime? Any information would be helpful.