We have to point out that using this shortcut will change your desktop resolution, so you’ll have to change it back after you’re done with your game. According to them, you just need to press Ctrl+Alt+F11 while in-game and black bars should disappear. In order to remove black bars in games, few users suggested using the Ctrl+Alt+F11 shortcut. This solution applies to owners of Intel integrated graphics, but if you have any other integrated graphics card, you should have similar options. If you’re having black bars in Windows 10, you should try to set scaling to Fullscreen. Change the resolution back to its original value and click Apply and OK to save changes.Locate the Scaling setting and set it to Scale Fullscreen.Go to Intel Graphic and Media Control Panel tab.Change your resolution to a lower one and click Apply and OK.

Go to Appearance and Personalization and choose Adjust screen resolution.

Choose Control Panel from the list of results.

Press Windows Key + S and enter Control Panel.

Once you’re over that, and the problem is still present, one of the below-presented solutions should help you address it. Make sure that they resemble the ones in system settings.

In there you should find the resolution and screen orientation settings.

Counter-Strike is one of those which have issues with black sidebars.

Fallout 4 remove borders