If you’re having trouble getting IW4x to start (Black screen), try one or more of the following solutions:

Fix 1: Disable the overlay (NVIDIA)

Disable the overlay if you have an Nvidia GPU. Also, turn off all other overlays such as Steam, FPS Counters, Discord.

Fix 2: Enable compatibility mode

Allow compatibility mode for Windows 8 by right-clicking iw4x.exe (Go to Properties, then to the Compatibility tab).

Fix 3: Install older Nvidia driver (417.35)

Reinstall 417.35 version of the Nvidia GPU driver.

Official site: https://www.nvidia.co.uk/Download/Find.aspx

Fix 4: Set Direct3D 9Ex > YES

• Open IW4x (if it’s possible).
• Go to Videos tab, and then Options.
• Set Direct3D 9Ex > YES.

Fix 5: Deactivate DEP

Deactivate DEP by running dep_disabler.bat as Administrator.

You can download this file from here: https://cdn.discordapp.com/attachments/275267435945263104/544154785943650334/dep_disabler.bat

Now you can Launch IW4x. Black screen problem is gone now 🙂