This is urgent, pls help guys. The machine had a brand new (~1hr old) install of Win8 Pro, and (in this instance, while installing the latest beta AMD Catalyst drivers), the machine crashed (showed a blue screen with a huge frownie face, and restarted). Then upon reboot, instead of booting into Win8, I get a black screen and: NTDLR is missing. Press Alt+Ctrl+Del to reboot. That's it. Repair doesn't work. The same thing happened earlier with the same exact machine and the same exact circumstances, except it was the final release preview build of Win8 - I thought that after formatting and installing the final it wouldn't happen, but here we are again. What the heck is wrong with it - what causes this?