For the best results, take the laptop to a licensed technician or send it back to the manufacturer. 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. Most likely, the screen cable is loose or damaged, but the inverter and backlight can also cause this problem. Any other activity on the computer stops. This is about one second intervals and can take 20 seconds or so. Hardware failure is the likely cause when flicker occurs only when the laptop moves. Apple Mail flashes image of message when downloading messages For the last several weeks Mail flashes the same image of an incoming message as each new message is downloaded to the Mac. Lower and raise the laptop screen repeatedly to determine if the flicker is related to movement. 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.' Horizontal flicker is reduced, which improves image quality.

Vertical Sync, or VSync, locks the refresh rate of the application to the refresh rate of the monitor. Turn on Vertical Sync if the flicker occurs when DirectX or OpenGL is in use, for example, while playing a PC game. In this case, return to the Device Manager, right-click your adapter and then 'Driver.' Click 'Roll Back Driver' and 'Yes' to confirm. Alternatively, you can revert to an older driver if the flicker began immediately after an update. Go to the manufacturer's driver Web page and search for this model to download the appropriate drivers. Look for 'Hardware and Sound' in the Control Panel and click 'Device Manager.' Under 'Display Adapters,' you'll see the exact brand and model of your video card. This is the most likely cause if you've always had a problem with flicker. If it takes more than 15 minutes, your iPad will exit recovery mode, and you'll need to repeat steps 2-4.Update your graphics card drivers.

Your computer will download the software for your device.

When you get the option to restore or update, choose Update.

Keep holding the button (or buttons) until you see the recovery mode screen.

On an iPad with a Home button: Press and hold both the Home button and the top button.

Press and quickly release the volume button furthest from the top button. Press and hold the top button until your device begins to restart.

On an iPad without a Home button: Press and quickly release the volume button closest to the top button.

While your device is connected, follow the steps for your device:.On a Mac with macOS Mojave or earlier, or on a PC, open iTunes. On a Mac with macOS Catalina, open the Finder. If you see the Apple logo or a red or blue screen during start-up, try these steps:

What to do when app is blinking mac