I ran “cacls C: /P guest:n” in a command prompt. After that, I was unable to access anything. I shutdown and booted from the OEM CD. I ran a repair install. I rebooted and put the CD in to try to finish the repair installation. It was going fine for about 5 minutes. Then I got a fatal error. I looked the error code up and it said that this meant that there were not sufficient permissions to perform the necessary tasks. Now, I can’t even boot into Windows so how do I replace the permissions? (By the way, I have already tried cacls in recovery console and copying it onto a flash drive and running it in the recovery console. Neither work. I am dual-booting with Ubuntu on another partition, so if I need to use linux for the repair, feel free to recommend that.)
