Networking Problems - Lenovo ThinkCentre M79 Hardware Maintenance Manual

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Hardware maintenance manual (186 pages)

User manual (154 pages)

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Table of Contents

• Press the power button to resume the computer from sleep or hibernation mode.

The monitor works when I turn on the computer, but goes blank when I start some

application programs

Solutions:

• Connect the monitor signal cable from your monitor to an appropriate connector on the computer. A

loose cable might cause intermittent problems.

• 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

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 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

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.