If someone could he help me it'll be much appreciate. Service tag <private>. I know it's no longer under warranty as of January 5 2020, but this is only two months over and I can't afford a new one.

For this out of warranty U2414H, try this test =

U2414H power button reset, BID (Built-in Diagnostics)

* Turn the U2414H off
* Disconnect every cable (including the power cable) from the rear and side of the U2414H
* Press the button in for 8 seconds
* Reconnect ONLY the power cable to the U2414H
* Turn the U2414H on and run the BID (Built-in Diagnostics), page 58
- If the BID does not show the issue, the U2414H itself is functional. The fault lies with either the cabling, video card, video card driver, or operating system
- If the issue appears on the BID gray/red/green/blue/black/white/text screens, the U2414H is defective