Networking Problems - Lenovo ThinkCentre M73 10DL User Manual

If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical
assistance, see Chapter 11 "Getting information, help, and service" on page 125.
The image appears to be flickering
Solutions:
• The screen might be affected by interference from nearby equipment. Magnetic fields around other
devices, such as transformers, appliances, fluorescent lights, and other monitors might be causing the
problem. Move fluorescent desk lighting or any equipment that produces magnetic fields farther away
from the screen. If this does not correct the problem, turn off the computer. Then, adjust the placement of
the computer and other devices so that they are at least 305 mm (12 inches) apart. Turn on the computer.
• Reset the refresh rate supported by your computer.
1. Right-click a blank area on the desktop.
2. Depending on your Windows version, do one of the following:
– For Windows 7, Windows 8, or Windows 8.1: Click Screen resolution ➙ Advanced settings.
– For Windows 10: Click Display settings. On the Display tab, click Advanced display settings ➙
Display adapter properties.
3. Click the Monitor tab, and then reset the refresh rate to be the highest and noninterlaced.
The image is discolored
Symptom: The image is discolored.
Action: The monitor might be affected by interference from nearby equipment. Magnetic fields around other
devices, such as transformers, appliances, fluorescent lights, and other monitors might be causing the
problem. Move fluorescent desk lighting or any equipment that produces magnetic fields further away from
the monitor. If this does not correct the problem, do the following:
1. Turn off the monitor. (Moving a color monitor while it is turned on might cause screen discoloration.)
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.
If these actions do not correct the problem, your monitor might need service. See Chapter 11 "Getting
information, help, and service" on page 125 for details.

Networking problems

The following are the most common networking problems. Select your networking problem from the
following list:
• "Ethernet problems" on page 116
• "A wireless LAN problem" on page 118
• "A wireless WAN problem" on page 118
• "Bluetooth problem" on page 119
For more information, see "Windows help system" on page 125.
Ethernet problems
For Ethernet problems, select your symptom from the following list:
• "Your computer cannot connect to the network" on page 117
• "The adapter stops working for no apparent reason" on page 117
116
ThinkCentre M73 User Guide