5. The problem could be caused by your keyboard. See
“Keyboard Problems” later in this chapter.
6. If you want to stop whatever the computer is doing and
return to the MS-DOS command
key and press (or
prompt, hold down the
). See Chapter 3 for more
information on stopping a command or program.
7. If your computer still does not respond, you can reset it
using the
command. See “Resetting
Your Computer” in Chapter 3 for more information.
8. If resetting the computer does not work, turn it off and wait
at least 20 seconds. If you do not have a hard disk drive,
insert your main operating system diskette in drive A; then
turn on the computer. It should load the operating system.
9. If you installed a display adapter card (and did not connect it
to the feature connector on the main system board), you
must set jumper J3 to disable the built-in VGA adapter.
Otherwise, you will not see any display on the screen. See
“Changing the Jumper and DIP Switch Settings” in
Chapter 4.
Restoring the Power Supply
To restore normal power supply operation, follow these steps:
1. Turn off the computer and leave it off for at least
30 seconds to reset the power supply logic.
2. To determine the cause of the high temperature and correct
the condition, check for the following:
q
Room temperature above 90 ° F (32°C). If this is the
case, relocate the computer to a cooler area.
Troubleshooting 6-7
