Flickering Screen – Solution :
Step 1. Change the refresh rate to match the capabilities of your monitor. The refresh rate is a measurement of how many times the screen redraws each second.Right Click on the desktop and choose “Screen Resolution,” then click “Advanced Settings” and “Monitor.” If enabled, place a check beside “Hide Modes That This Monitor Cannot Display” and choose a higher refresh rate from list.
Step 2. Update the graphics card drivers.
Step 3. Do the turn on Vertical Sync if the flicker occurs when DirectX or OpenGL is in use. For Nvidia cards, VSync is found in “Manage 3D Settings.” For Intel, look for 3D Settings or “Asynchronous Flip.” On ATI/AMD cards, turn on “Wait for Vertical Refresh.”
Step 4. Hardware failure is the likely cause when flicker occurs only when the laptop moves. Most likely, the screen cable is loose or damaged, but the inverter and backlight can also cause this problem. The laptop needs to be opened in order to confirm the problem, but do not attempt this unless you are familiar with PC repair and do not mind voiding the warranty. For the best results, take the laptop to a licensed technician or send it back to the manufacturer.