I have a AOC G2460FQ monitor that is advertised to be a 144hz monitor. When I change the refresh rate to anything higher than 60hz it goes black and stays black until the settings revert. I have a GTX 750 graphics card and a Ryzen 5 1600 Processor. I don't think those would be the issue but I have not tried using the monitor with another computer. If I send it to the company to check out and fix I'm left without a monitor for 2 weeks so if there's any suggestions you guys have please tell me!!