If you are running Win 10, follow this: Setting > System > Display > Advanced Display Settings > Display Adapter Properties. Then click the “Monitor” tab, choose your monitor’s advertised refresh rate from the “Screen Refresh Rate” list, and click “OK.”
No, there is no way to convert a TV panel from 60 Hz to 120 Hz. You need to buy a new TV. For that you will have to get a new monitor which supports 120hz. Sorry but their is no other way.
Does HDMI support 144Hz? Yes, depending on the HDMI version, resolution, and bandwidth. All versions of HDMI from HDMI 1.3 onward right through to HDMI 2.1 provide enough raw bandwidth for 144Hz, provided sacrifices are made in either color, chroma, compression, or resolution.
Simply put, having a higher refresh rate allows you to notice movements more quickly, giving you a competitive advantage. However, If your rig isn’t capable of running your games at high framerates, you won’t benefit from the higher refresh rate.
From the desktop, right click on the desktop itself and select Screen Resolution. Then select Advanced Settings, navigate to the monitor tab, and choose 144Hz from the drop–down menu.
If you are running Win 10, follow this: Setting > System > Display > Advanced Display Settings > Display Adapter Properties. Then click the “Monitor” tab, choose your monitor’s advertised refresh rate from the “Screen Refresh Rate” list, and click “OK.”
Does HDMI 1.4 support 144Hz at 1080p? Yes, HDMI 1.4 can support up to 144Hz at 1920?1080. However, not all monitors with HDMI 1.4 necessarily do.
1.1080p content at 144Hz, you will need either a dual-link DVI, a DisplayPort, or an HDMI 1.3 or higher cable. … 1440p at 144Hz, you will need at least an HDMI 2.0 or a DisplayPort 1.2 cable. 3.4K at 144Hz, you will need a HDMI 2.1 or a DisplayPort 1.4 . . . Read more
0:081:26How to Change Screen Refresh Rate With NVIDIA Control PanelYouTube
First, 144Hz depends on your GPU mostly, and also your monitor + resolution. If the monitor and the resolution the monitor supports can handle 144Hz, then your GPU must be capable of handling 144Hz. Otherwise, it will be useless to use a 144Hz monitor.