September 2, 2004
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My monitor's screen flickers constantly, and it gives me a headache. Is this a hardware problem, or do I use software to fix it?
Several things can cause screen flicker. I'll deal with the two most common reasons here. 1. External interference
A nearby electronic device can cause interference. If your monitor is too close to an active electronic device, move them away from each other. 2. Refresh rate
You can fix the most common cause of flicker using Windows' own software. In this case, flicker happens because your monitor's refresh rate,
the speed at which a screen redraws itself, isn't high enough for your monitor's resolution. Fix the refresh rate
In Windows 2000 or XP, go to Start > Settings > Control Panel and click Display. You can get to Display more quickly by right-clicking anywhere on the desktop and choosing Properties. Once you get there, do the following:
- Click the Settings tab.
- Press the Advanced button.
- Click the Monitor tab.
- Select a higher refresh frequency from the Screen Refresh Rate pull-down menu.
- Press the Apply button.
- You may need to try more than one setting before you find the best one.
As senior editor for software and services and CNET's resident security expert, Robert Vamosi
has been featured on CNN, CNBC, MSNBC, and other outlets to share his knowledge about the latest threats and offer advice on personal and corporate security.