I really need some help please!! I bought a Dell Vostro 200 from a guy a few days ago to use for my business. First use everything booted up fine and windows was good. Later I accidentally pushed the cd rom drive shut and messed it up some how. I figured I stripped the gear or stretched the rubber band. idk. The next time I booted the comp I received the prompt "Invalid system disk, replace the disk, and then press any key", so I disconnected the cd rom drive because I dont need it any ways. After restart everything worked fine. Now its doing it again, and Ive tried re-connecting the cd rom drive,etc and nothing, just this same prompt every time I reboot. Am I screwed? I dont have any discs for this comp. Thnks for any help.