HP Pro SFF 400 G9 - Troubleshooting Without Diagnostics; Before You Call for Technical Support

Troubleshooting without diagnostics5
Use these sections to identify and correct minor problems.
CAUTION: Misuse of the computer or failure to establish a safe and comfortable work environment
can result in discomfort or serious injury. See the Safety & Comfort Guide at http://www.hp.com/ergo
for more information about choosing a workspace and creating a safe and comfortable work
environment. For more information, see the Safety & Regulatory Information guide.
Before you call for technical support
If you are having problems with the computer, try these solutions to isolate the exact problem before
calling for technical support.
● Run the HP diagnostic tool.
● Run the hard drive self-test in Computer Setup.
● Check the power light on the front of the computer to see if it is blinking red. The blinking lights are
error codes that will help you diagnose the problem.
● If you are working on a network, plug another computer with a different cable into the network
connection. There might be a problem with the network plug or cable.
● If you recently added new hardware, remove the hardware and see if the computer functions
properly.
● If you recently installed new software, uninstall the software and see if the computer functions
properly.
● Boot the computer to the Safe Mode to see if it will boot without all of the drivers loaded. When
booting the operating system, use “Last Known Configuration.”
● See the comprehensive online technical support at http://www.hp.com/support.
Access HP Business Solutions at https://www.hp.com/us-en/solutions/business-solutions.html for the
latest online support information, software and drivers, proactive notification, and worldwide community
of peers and HP experts.
If it becomes necessary to call for technical assistance, be prepared to do the following tasks to ensure
that your service call is handled properly:
● Be in front of your computer when you call.
● Before you call, write down the computer serial number and product ID number.
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Chapter 5 Troubleshooting without diagnostics