This is a Windows 7 troubleshooting guide to resolving screen flicker issues in Windows 7. Screen flicker is usually caused by improper resolution, refresh rate, or issues with cabling between the computer and the monitor. This guide walks through checking these issues.NOTE: While Windows 7 is no longer supported by Microsoft or Micro Center as the operating system has reached its end of life, this guide is available for those still looking for assistance with Windows 7. Further troubleshooting outside of this guide for Windows 7 is not available from Micro Center.1. Right-click on an empty area of the Desktop and choose Screen Resolution. 2. Click on the monitor that is having issues. If necessary, click on Identify to see which monitor is which, by matching the number that is displayed on the screen after clicking Identify with the number showed on the window. 3. Click in the Resolution box and ensure the slider is at the Recommended Resolution.Note: Changing the resolution will change the way things appear on the screen. For most people on most displays, the recommended option will provide the best picture clarify and reduce the chance for picture-related issues on the monitor. 4. Right-click on the monitor that is flickering and choose Properties 5. Select the Monitor tab on the top of the new window. 6. Change the Refresh Rate to anything other than what it was set to before. For example, if it is set to 60, change it to 59, or 75.Note: If you cannot change the refresh rate, proceed to the next step. 7. Click Apply and check to see if the issue is resolved. If it is not, move on to the next step.8. Check the Video Cables that run from your computer to your monitor. In many cases, if using a VGA connection (typically blue on both ends), the cords can cause screen flicker and/or picture degradation. Ensure the cables are plugged in securely on both ends.If possible, use a DVI cable (typically white at both ends), an HDMI cable (looks similar to a USB connection), or DisplayPort (looks similar to HDMI) cable as these are digital cables and will provide better picture quality.If the problem persists, try replacing your monitor cable.Finally, if, after trying another monitor cable, the problem still exists, the issue is with either the computer or the monitor. If possible, try the monitor on another computer, or another monitor on the same computer to see if the problem persists.