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You can reset the computer to reload the operating system or to restart a
program. You may need to reset the computer if an error occurs and the

computer does not respond to anything you type. However, resetting erases

all data in the computer’s temporary memory (RAM) that you have not

stored, so reset your computer only when necessary.

In MS-DOS, you can hold down Ctrl and press C to stop a program’s

operation and return to the MS-DOS command prompt. If an error occurs,

try this method before you reset the computer.

Do not reset the computer to exit a program unless you have to. Some

application programs classify and store new data whenever you exit the

program properly. If you reset the computer while such a program is running,
you may lose data.

There are three ways to reset the computer. Because each is more powerful

than the last, try them in the order listed here:

If you are using MS-DOS, hold down

Ctrl 

and 

Alt 

while you press

the 

Del 

key. The screen goes blank for a moment and then MS-DOS

reloads. (MS-DOS must either be on the diskette in drive A or on the
hard disk.) If this does not correct the problem, try the next method

described below.

Press the 

RESET 

button on the front panel. This method works even

when the keyboard does not respond to your commands. If this does

not correct the problem, try the method described below.

Remove any diskettes from the diskette drives and turn off all
peripherals. Then turn off the computer by pressing the 

POWER 

button

on the front of the main unit. Wait five seconds and then switch the
power back on.