HP ZBook 17 Maintenance and Service Guide - Page 138

Unresponsive Items Symptom Unresponsive Procedures Possible causes Program in use has stopped responding to commands. Troubleshooting steps 1. If possible, use the Windows Task Manager to isolate and terminate the offending process. 2. Attempt the normal Windows shutdown procedure. 3. Restart the computer using the power button. Slow performance Items Symptom Slow performance when performing small tasks, or even in idle mode Tips and tricks Procedures Possible causes Processor is hot or hard drive is full. Troubleshooting steps Processor is hot 1. Verify that airflow to the computer is not blocked. 2. Verify that chassis fans are connected and working properly. Some fans operate only when needed. 3. Verify that the processor heat sink is installed properly. Hard drive is full 1. Transfer data from the hard drive to create more space on the hard drive. Microsoft recommends at least 200 MB to sync system files. 2. Perform disk defragmentation to consolidate fragmented data on the hard drive so it will work more efficiently. Also see Slow performance on page 143. See Routine Maintenance for Performance Improvement on page 154). See http://windows.microsoft.com/en-us/windows-8/free-up-disk-space. See http://windows.microsoft.com/en-us/windows/optimize-windows-betterperformance#optimize-windows-better-performance=windows-vista. 124 Chapter 7 Troubleshooting guide