Tip T319 - Usually, a refresh rate of 75Hz or more is necessary to completely remove flicker from monitor screens - depending on resolution, the brightness of the display and the person itself. If you have a flat-panel (LCD) display ignore this tip.
Fix: Switch to a higher refresh rate from Control Panel\Display\Display Properties\Settings, click Advanced Properties\Adapter. Choose the highest supported.
For more information, please see the (FAQ).