The computer tries to start up by using the "wrong" disk drive.
Unless you've used the Control Panel Program to change the startup slot, the computer will attempt to start up by using the disk in the disk drive connected to the highest-numbered slot or corresponding port. A 5.25-inch disk drive in the disk drive port corresponds to slot 6. A 3.5-inch disk drive in the disk drive port corresponds to slot 5.
Put your startup disk in the disk drive that the computer is using u the startup drive or change the startup slot by using the Control Panel Program, explained in Appendix A.
The program starts up but doesn't tell you what to do. All you see is a square bracket and the cursor.
The program on the disk isn't self-starting. (You're most apt to run into this situation if you're using programs written by friends, acquired at a users-group meeting, or downloaded from a bulletin board.)
Type CATALOG and press Return. This should produce a list of what's on the disk. You can use any of the programs with the letter A in front of them by typing RUN, the name of the program, and then pressing Return. You can use some of the programs with the letter B in front of them by typing BRUN, the name of the program, and then pressing Return. (The letters A and B refer to file types.)
Nothing appears on your screen when you turn on the power.
The monitor's power switch is off, or the monitor isn't plugged into the computer or into a power source, or the monitor's contrast needs adjusting.
Make sure the monitor is turned on and plugged into both the computer and a power source and that the contrast is adjusted properly.
