You can try the steps below in order to solve the issue you are having:
1. Try a BIOS update to your Intel desktop board.
2. 2. Install the latest Chipset Software Installation Utility.
3. 3. Install the latest Graphics driver.
4. 4. Avoid the use of any HDMI or DVI connector or converter.
5. 5. Please install the latest driver for your AOC display.
You can find these files here: