I have Asus VG248QE 144Hz monitor. I tried alot of different things but i can only use 60 Hz. My GPU is EAH6950 DCII/2DI4S/2GD5
https://www.asus.com/Graphics-Cards/EAH6950_DCII2DI4S2GD5/.
Maybe i cant get up to 144 Hz because my GPU too old?
How are you connecting your monitor? VGA,Dual Link DVI, display port? The 144hz will not function on standard VGA or HDMI, you would have to use DVI or Display port adapters. Otherwise as mentioned it can be your GPU limiting you.
there is a post here about it but it is defiantly your GPU that is holding you back but you may find this small dip switch which enables 120hz http://www.overclock.net/t/1076139/120hz-with-an-eah6950-dcii-2di4s-1gd5/10
Well sad life maybe i am already too dumb or something but i tried to remove my GPU and i couldnt find any switch on it.
How are you connecting your monitor? VGA,Dual Link DVI, display port? The 144hz will not function on standard VGA or HDMI, you would have to use DVI or Display port adapters. Otherwise as mentioned it can be your GPU limiting you.