asus mg278q

So about two days ago my monitor when i started it it was about 1/3 normal looking and the other 2/3 was darker but still on. So i tried to fix it by restarting my computer and shutting it off and turning it on and that worked two days ago and yesterday but today it didn't work. So i am curios...

I have an Asus MG278Q . It's kinda ok but I don't like the color production of it at the end it's a TN panel , a good TN panel but still has the limitations. Desktop usage is pleasant , I like the 144hz rate and fast panels but colors are bit washed out in games and movies . Blacks are not black...