“Stuck” pixels are similar, but instead of showing black they’re stuck on a single color that doesn’t match the computer screen’s image, typically either red, green, or blue. Dead or Stuck PixelsĪ “dead” pixel is a single dot on your LCD screen that doesn’t illuminate, showing up as one or more black squares. Try your monitor on another computer or laptop to see if the problem persists if it does, you’re probably looking at a replacement, since the error is almost certainly in the LCD panel (the most expensive component of the monitor). Vertical Linesīlack or single-colored lines on LCD screens are caused by a lot of different issues, but if the standard fixes outlined in the flickering section above don’t fix them (check your video and power cables for problems, install new drivers), it’s probably a physical defect in the screen itself. If that’s the case, repair or replacement are the answers.

But it’s more likely that there’s a loose or malfunctioning component in the screen assembly itself. It’s possible you could be drawing too much power from one of your home’s electrical circuits or overloading your surge protector-just move the power adapter to another plug to test this.

Unfortunately, most other flickering symptoms are caused by a power deficiency somewhere in the monitor itself. Go into your operating system’s display settings (right-click desktop and head to Display settings > Display adapter properties > Monitor in Windows 10) to make sure the right hertz setting is applied-you may need to update your video drivers as well. Most LCD monitors use either 59 or 60 hertz, though 75Hz, 120Hz, and 144Hz are also found on premium monitors. The refresh rate is the number of times the computer sends an image to the monitor per second, expressed in hertz. An incorrect refresh rate setting can also cause flickering.

How to fix display driver stuttering