Table 7-22 Issues, possible causes, and fixes
Items Procedures
Symptoms
System locks up, freezes in certain
physical area or location
Possible causes
Electromagnetic interference (EMI).
Troubleshooting steps
1. See (2. Examine the environment on page 77). Pay attention to external power
source, high-frequency signals such as cell phones, microwave ovens.
2. Move the computer to different locations nearby to determine where it fails and
where it does not fail.
3. Test with a verified working computer in original factory configuration.
4. Consult with support.
No wake up
Use this information to troubleshoot wake-up issues.
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Chapter 7 Troubleshooting guide
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