My monitors are acting weird

[TEGNO]

Hi. I have two monitors. I have problems with each one them in its own way.

1. LG 31MU97 (Connected to GPU with Display port at 60Htz)

2. LG IPs FullHD (Connected to GPU with HDMI cable at 60Htz)

Both of them are connected to a UPS. (My system info is at the end.)

 

My first problem: The first monitor (31MU97) keeps flickering randomly. I mean I'm working. Suddenly something appears on my display for a really short time in a small region of the monitor. It's white and pixelated. Like the colors are changed or a noise in the monitor. It cannot be seen on the captured movies of the screen. (If it helps!) It was there almost from the beginning. Sometimes it's worse. I tried these things:

1. Disconnecting the monitor and connecting it to somewhere else.

2. Changing the picture mode

3. Reinstalling Windows

4. Connecting the monitor to another display port of my GPU

5. Changing the settings to 50Htz on both monitors

6. Turning off every visual effect of my windows. (Setting it to best performance.)

My friend has the same monitor and the same UPS and his OK with them.

What should I do? (Read the second problem. It might help!)

 

My second problem: Every time I turn the lights on or off (Just one of them) my second monitor (The FullHD one) will restart. It turns off and turns back on again! Sometimes it stops happening after several times of doing it. I have tried these:

1. Disconnecting the monitor and connecting it to somewhere else.

2. Changing the picture mode

3. Reinstalling Windows

Note: It's OK When I connect it to another input (My Laptop). (Read the first problem. It might help!)

 

My System Info:

Nvidia GTX 1080Ti

Intel 8700K Coffeelake

MSI Carbon Gaming Pro AC

2000VA UPS

Cooler Master 140 Liquid cooler

500GB Evo SSD Samsung

4TB Seagate Barracuda

32GB Corsair Vengeance Ram

1200W Platinum Green Power supply 

 

I really need it fixed. So please share your Ideas!

If I missed anything, just let me know.

Thank you all!

[hconverse02]

Check and make sure your nvidia drivers are up to date and your control panel settings are correct.

[TEGNO]

7 minutes ago, hconverse02 said:

Check and make sure your nvidia drivers are up to date and your control panel settings are correct.

My Nvidia Drivers are up to date.

What do you mean by "control panel settings"? If you mean my display settings they are OK! ( I Guess!)

[TEGNO]

I want to close this so I can Open it in the troubleshooting section.

[hconverse02]

9 minutes ago, TEGNO said:

I want to close this so I can Open it in the troubleshooting section.

You can't delete it, you can change the section though