I have an ASUS PC computer that got totally shut down improperly. It was in the middle of re-starting when it got shut down. I turned it on again, and it gave me instructions to change the CSM Parameters. I did that and restarted the computer again. The computer now says, "reboot and select proper boot device. Or insert boot media in selected boot device and press a key". Does this mean I changed the CSM Parameters correctly? What should I do now? I'm not sure what a boot device is. Will it destroy the information on my computer? Please help! I'm using a laptop but I miss my PC!