I turned on my computer and just see a little blinking picture of a floppy disk, system folder, or a question mark. [9 & X]
Try starting from the System Install CD-ROM that came with your computer. If the CD or disk is ejected, you may have a stuck button on your mouse or trackball. Or perhaps it isn't really a startup disk and is lacking the software needed to boot your computer. Turn off the Mac, unplug the mouse or trackball, and then see if it starts okay from the CD or your hard disk. If so, the mouse or trackball is the culprit.
What you do next depends on your system version.
In some instances, repair programs will make things worse. This is why we say to always back up everything, so that, if a repair fails, you have another recourse.
If you have OS 9 or earlier:
If it starts up okay from your System CD and you see your hard disk icon below the CD icon, the System on your hard drive may have become damaged. If so, back up your important files, run Disk First Aid to repair any directory damage, and then reinstall the System. If that doesn't solve the problem, try a "clean System install," which is described later in this book.
If your hard disk drive icon doesn't show up under the CD or floppy icon, you can try running Disk First Aid. If Disk First Aid sees your hard drive, it may be able to fix problems in the directory. If it finds things to fix, run it again to be sure that everything is really fixed. If it keeps saying it fixed the ...