Networking Problems - Lenovo ThinkCentre E63z User Manual

• Install the device drivers for the application programs. Refer to the documentation for the affected
application program to check whether any device drivers are required.
The image appears to be flickering
Solution: Reset the refresh rate.
1. Open Control Panel.
Note: To open Control Panel on Windows 8.1, see "Accessing Control Panel on the Windows 8.1
operating system" on page 17
2. Click Hardware and Sound ➙ Adjust screen resolution ➙ Advanced settings.
3. Click the Monitor tab to reset the refresh rate.
Set the refresh rate to be the highest, noninterlaced refresh rate supported on your computer. Refer to
the documentation that comes with your monitor for the supported refresh rates.
The image is discolored
Solution: The monitor might be affected by interference from nearby equipment. Move fluorescent desk
lighting or any equipment that produces magnetic fields further away from the monitor. If the problem
persists, do the following:
1. Turn off the monitor.
2. Adjust the placement of the monitor and other devices so that they are at least 305 mm (12 inches) apart.
3. Turn on the monitor.

Networking problems

This section provides solutions to networking-related problems.
Ethernet problems
My computer cannot be connected to the network
Solutions:
• Connect the cable from the Ethernet connector to the RJ45 connector of the hub.
• Have the latest device driver installed on your computer.
To check whether you are using the latest device driver, do one of the following:
– On Windows 7:
1. Click Start ➙ Control Panel.
2. Click Hardware and Sound.
3. Click Device Manager. Type the administrator password or provide confirmation if prompted.
4. If an exclamation mark is displayed next to an adapter name under Network adapters, the adapter
driver might not be the latest or is disabled. Right-click the highlighted adapter to update the driver.
5. Click Update Driver Software, and then follow the instructions on the screen.
– On Windows 8.1:
1. Open Control Panel. For more information, see "Accessing Control Panel on the Windows 8.1
operating system" on page 17.
2. Click Hardware and Sound.
3. Click Device Manager. Type the administrator password or provide confirmation if prompted.
4. If an exclamation mark is displayed next to an adapter name under Network adapters, the adapter
driver might not be correct or is disabled. Right-click the highlighted adapter to update the driver.
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ThinkCentre E63z User Guide