This has been driving me crazy for the past 9 hours. It all started by me trying to put a new cd/dvd reader/writer drive. I am 99% positive that the new drive has nothing to do with this problem however. Along with installing the new drive, I replaced the flat IDE cables that came with the computer with the newer type of cables that are in stores these days, the round ones that are supposed to "conserve space" When I started up the computer I got a black screen with this message: Disk Boot Failure, Insert System Disk and Press Enter I realize i'm not the first person with this problem as I have been researching online for the past hour, however I have tried everything, unhooking everything from the motherboard plugging it back in, changing boot priority settings in bios, swapping hard drives, completely taking out all the drives or each drive once at a time. I created a startup disk and put it in there when the error message comes up and press enter, and then the floppy disk drive makes some noise and gives me this message: Starting... A:\> A:\> and nothing happens after that. The only thing that is of concern to me is that I think when I first started up the comp after installing the new cd/dvd drie, the cable connecting the motherboard to the floppy disk drive was not all the way in the motherboard, i goofed. I hope something can be done, cause the computer isn't even mine, it belongs to a girl that i'm trying to talk to which makes matters worse. Paaaaalease help me, any advice suggestions expertise is greatly appreciated, hell i appreciate anyone who read this far down. by the way, the comp is running xp home edition has 80 gb western digital hard drive, 256 mb's of ram, its a compaq presario S5100NX. No added sound or video cards. two cd/dvd drives connected. bout 3 years old, but has been very well maintained so i doubt age could play that much of a factor, problem initially began a with the computer for the first time ever a week ago when the cd drive wouldn't burn anymore and sometimes wouldn't even recognize discs at all. the other dvd drive worked perfectly though. so after looking at everything (taking out ied cables, switching from slave to master) i told the owner that it was either a bad ied cable or bad drive, so she got the new cables i mentioned above and the new cd/dvd drive.