accidentally blocked authenticated users from C drive :(

[ClimaxKen]

hi. I was trying to remove a virus that had been on my PC since 2011 (and its still on). so i went into the permissions and unchecked authenticated users permissions. of course a warning prompt popped up and i ignored it. next thing you know, I COULDNT PLAY ANY GAMES!!! because i couldnt access flash cookies because they are located in the C drive. ive tried activing the built-in administrator, and right-clicking the C drive and hitting properties and then security, but i STILL even on the built in administrator, get access denied. i cant make a new account because access is denied. i cant do anything with my computer. i would factory reset it but i lost the disk for it a LONG time ago. somebody please help me.

 

[GokAy]

Hmm, try in Safe Mode?

 

[ClimaxKen]

Hmm, try in Safe Mode?

nope. also tryed using built in administrator but still cant fix what i did, the takeown command didnt work, cant restore, and i cant download anything :/

 

[GokAy]

Try a System Restore from the recovery environment -(option 2) http://www.sevenforums.com/tutorials/700-system-restore.html