Maintenance and Service Guide
Table Of Contents
- Product features
- Illustrated parts catalog
- Routine care, SATA drive guidelines, and disassembly preparation
- Removal and replacement procedures
- Computer Setup (F10) Utility
- Using HP PC Hardware Diagnostics
- Troubleshooting without diagnostics
- Safety and comfort
- Before you call for technical support
- Helpful hints
- Solving general problems
- Solving power problems
- Solving hard drive problems
- Solving audio problems
- Solving printer problems
- Solving keyboard and mouse problems
- Solving hardware installation problems
- Solving network problems
- Solving memory problems
- Solving USB flash drive problems
- Solving Internet access problems
- Solving software problems
- Backing up, restoring, and recovering
- POST error messages and diagnostic front panel LEDs and audible codes
- Password security and resetting CMOS
- Power cord set requirements
- Statement of memory volatility
- Specifications
- Index

“Illegal Operation has Occurred” error message is displayed.
Cause Solution
Software being used is not Microsoft-certied for your version of
Windows.
Verify that the software is certied by Microsoft for your version
of Windows (see program packaging for this information).
Conguration les are corrupt. If possible, save all data, close all programs, and restart the
computer.
84 Chapter 7 Troubleshooting without diagnostics










