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Solving hardware problems
Solving hardware problems
If the problem is... Here’s what to do...
Beep during Power-On 
Self Test (POST)
See the troubleshooting steps in the section titled 
“Did the system beep after it was turned on?” on 
page 34.
Screen is black (no error 
code)
If you did not install memory modules or adapter 
cards, see “HelpWare support and services” on 
page 79 for information on obtaining service.
Error code is displayed
If an error code is displayed, find the code in 
“Responding to error codes” on page 58 and take the 
action listed.
Computer appears to have 
turned off without 
warning
1
If the Standby feature is enabled, press the On/Off 
button on the front of the system unit.
2
Make sure that the system unit and monitor power 
cords are securely plugged into electrical outlets.
3
Make sure that the cables are correctly and securely 
connected to the system unit.
4
Check for a blown fuse, tripped circuit breaker, or 
power failure.
5
Unplug the system power cord from the electrical 
outlet, wait 15 seconds, and then plug the power cord 
back into the electrical outlet. If the computer does 
not start immediately, push the system On/Off button.
6
If you have added hardware inside the system unit, 
make sure that the power cable connectors are 
securely attached.
If any of these problems continue after taking the actions 
listed, run the diagnostics programs that came with your 
computer. If you need service, see “HelpWare support and 
services” on page 79.
66xarg.book : 66xach3.fm  Page 38  Tuesday, June 30, 1998  10:18 AM