Hi, I came home today to find my Intel iMac wasn't working properly. I can only get to the login screen and the keyboard and mouse won't work. It's definitely not a problem with the hardware and it was working fine earlier and I haven't touched them since then. They also work with my other computer. I think I may have done something to a system file (Earlier I was doing that thing that allows your iPhone to go into DFU mode in 10.5.6). If I could get in, I know what files to fix. Is there even any way just to system restore the whole thing? There isn't anything too essential on there and it could do with a cleaning out anyway. P.S. I'm not sure if I have any disks for it as I bought it second hand off eBay a few months ago. If that's what it requires, I can have a look for them. Thanks. Edit: I just remembered, the file I was altering was the USB files so I must have messed something up. Edit x2: Is there any way of using a laptop as the keyboard and mouse, or sonething like that?