Network Connectivity Wireless (Wlan) - HP Z VR Backpack G1 Maintenance And Service Manual

Network connectivity wireless (WLAN)

Items
Symptoms
● Unable to find networks (yellow bang)
Connection dropouts
●
● Slow performance
HP Support Assistant tool - No network detected in
HPSA
Wireless Adapter Properties - U-APSD support
The sections below are intended for authorized service providers/technicians.
72 Chapter 7 Troubleshooting guide
Procedures
Possible causes
Network source, cable, connection, wireless module, driver, settings.
Troubleshooting steps
1. Turn off the computer's wired network (remove RJ-45 cable).
2. Examine environment for interference, such as cell phone or microwave, that
may emit high frequencies (above 1 GHz).
3. Verify wireless source by moving computer closer to the wireless base/router.
4. Test with different wireless networks and check with your IT department for
hardware compatibility, settings.
5. Verify that the wireless light is on. If the light is amber, press the wireless
button to enable the wireless device.
6. Test with HP Support Assistant in Windows.
7. Diagnose with HP PC Hardware Diagnostics (UEFI) to isolate a hardware issue
from a software issue.
8. Update drivers: Verify that wireless module is displayed in Device Manager
and be sure that wireless drivers are up to date using
Support Assistant. If updating drivers does not help, try rolling back to
previous drivers.
9. Reset BIOS to Default: If other devices can connect to your wireless network,
but your computer cannot connect, a BIOS setting might be the cause of the
problem. Restore BIOS to default.
10. Configure power management advanced settings as necessary.
In the example to the left, U-APSD support (Unscheduled Automatic Power
Save Delivery) is changed to Disabled to resolve an incompatible access point.
If disabling U-APSD improves the throughput issue, check with the access
point provider for updated firmware that resolves the issue.
11. Test with verified working operating system or perform operating system
recovery to verify that the issue is not caused by customized settings.
12. Test with a verified working wireless module.
1. Verify that the wireless module and its antenna cables are fully inserted and
in good condition (see WLAN module removal and replacement section).
Reseat wireless module and antenna connection.
2. Verify module antenna cable connection are not loose.
3. Verify antenna cables are properly connected to the MAIN and AUX terminals
(see WLAN module removal and replacement section).
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