User Manual
User Manual
User Manual
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Actions:<br />
• The monitor might be operating in a low-refresh rate display mode. Set the monitor to the highest,<br />
noninterlaced refresh rate supported by your monitor and the video controller in your computer.<br />
Attention: Using a resolution or refresh rate that is not supported by your monitor might damage it. Check<br />
the documentation that comes with your monitor to verify the supported refresh rates.<br />
• The monitor might be affected by interference from nearby equipment. Magnetic fields around other<br />
devices, such as transformers, appliances, fluorescent lights, and other monitors might be causing the<br />
problem. Move fluorescent desk lighting or any equipment that produces magnetic fields farther away<br />
from the monitor. If this does not correct the problem, do the following:<br />
1. Turn off the monitor. (Moving a color monitor while it is turned on might cause screen discoloration.)<br />
2. Adjust the placement of the monitor and other devices so that they are at least 305 mm (12 inches)<br />
apart.<br />
3. Turn on the monitor.<br />
• You can reset the refresh rate through your operating system Control Panel:<br />
On the Windows 7 operating system, click Start ➙ Control Panel ➙ Hardware and Sound ➙ Adjust<br />
screen resolution ➙ Advanced Settings. Then click the Monitor tab and select a new refresh rate.<br />
On the Windows 8 operating system, open Control Panel and click Hardware and Sound ➙ Adjust<br />
screen resolution ➙ Advanced Settings. Then click the Monitor tab and select a new refresh rate.<br />
• See your operating system documentation or help for further information on monitor settings.<br />
If these actions do not correct the problem, your monitor might need service. See Chapter 11 “Getting<br />
information, help, and service” on page 75 for details.<br />
The image is discolored<br />
Symptom: The image is discolored.<br />
Action: The monitor might be affected by interference from nearby equipment. Magnetic fields around other<br />
devices, such as transformers, appliances, fluorescent lights, and other monitors might be causing the<br />
problem. Move fluorescent desk lighting or any equipment that produces magnetic fields further away from<br />
the monitor. If this does not correct the problem, do the following:<br />
1. Turn off the monitor. (Moving a color monitor while it is turned on might cause screen discoloration.)<br />
2. Adjust the placement of the monitor and other devices so that they are at least 305 mm (12 inches) apart.<br />
3. Turn on the monitor.<br />
If these actions do not correct the problem, your monitor might need service. See Chapter 11 “Getting<br />
information, help, and service” on page 75 for details.<br />
Networking problems<br />
The following are the most common networking problems. Select your networking problem from the<br />
following list:<br />
• “Ethernet problems” on page 67<br />
• “A wireless LAN problem” on page 68<br />
• “A wireless WAN problem” on page 68<br />
• “Bluetooth problems” on page 69<br />
For more information, see “Help and Support” on page 75.<br />
66 ThinkCentre Edge <strong>User</strong> Guide