Windows 10: Stuck at 60Hz with 1920x1080

So my monitor is ACER NITRO VG240YSBMIIPX, i am connected through graphic card Nvidia GeForce GTX1650, my refresh rate was 165hz at 1920x1080 but now i have a problem cause without reason my monitor got black screen then my refresh rate is only at 60Hz at 1920x1080. I got HDMI 2.0 but its not problem cause it worked perfectly with that cable. Right now i only can change to 1680x1020 1920x1080 isn't available somehow and if im changing to a custom resolution 1920x1080 it keeps getting into 60Hz. Im also on windows 10. i already installed newest graphic card drivers

:)

 

My 144hz monitor is stuck at 60hz.

I've already done most of these things. I've updated my monitor drivers and my GPU drivers, I'm on the most recent Windows version. Though I should mention, that this is a hand me down from my father, who used this monitor and GPU at 120hz with an HDMI cable. The current resolution I'm running at is 1920x1080@60hz, but when I look at the "List All Modes" in advanced display properties, there is one listed for 1280x720@120hz. I did test it out by switching the resolution to 1280x720 and in the advanced display settings it did say 120hz, but I don't want to sacrifice quality for smoothness, as this monitor should support 1920x1080@144hz. I've tried using the Nvidia control panel "Create Custom Resolution" but no save option appears after I press test with 144hz selected.

 

Unable to select 1920x1080 resolution.

After a restart a few days ago my PC is suggesting that 1024x768 @ 60hz is my native resolution.

As I know this is not the case (I have had a 1920x1080 display for years and it has worked perfectly) I used DDU to have a clean install of my gpu drivers (nvidia) and changed and my HDMI cable, but to no avail. Suspiciously, nvidia control panel views my
monitor as connected via DVI, which it is not, and windows is running a generic php driver for it. I have since installed the generic windows flat panel 1920x1080@60hz driver, I was hoping this would fix it but it didn't change a thing.

I have run out of ideas. Anybody have any experience in this bizarre problem?

 

My 144hz monitor is stuck at 60hz.

I have a BenQ XL2430T 1080p 144hz monitor but it's stuck at 60hz. I have an RTX 2060 and I'm using an HDMI 2.0 cable. Windows and Nvidia control panels only say 60hz, and there is no option to change the refresh rate in the monitor settings.