Ok, I was trying to set permissions on an external hard drive because I could not access any of my files and a friend was trying to help and he told me I needed to start my comp up in safe mode. I couldn't remember how so we opened up config.sys and we clicked on a tab and unchecked a box of some kind of boot file and now I got nothing. The computer acts like it is starting but I never get anything on the monitor, it's like it doesn't even get a signal from the comp, and I know the monitor works because I have two comps hooked up to it and the other one comes on. It's like I have power but nothing happens. Can anyone help me please?