Dell laptop G3 15 3590 HDMI no signal

Hi, I decided to post here because I have this problem for 2 days now.

So basically my issue is that my Dell G3 15 laptop does not output to HDMI all of a sudden. It worked well before I went to sleep and did not work when I started it in the morning. When I plug the HDMI cable from my laptop to my monitor, my laptop screen goes black and my monitor outputs "No signal". I usually have my laptop projection to "Second screen only" (my monitor), but even when I select to "Duplicate" it is still the same effect.

My laptop specs :

DELL G3 15 3590

• Intel i7 9750H
• 8GB RAM
• GTX 1660 Ti Max-Q
• Windows 10 version 2004

What I tried :

• rebooting my laptop many times
• unpluging then repluging my monitor
• checking if my monitor had the correct source selected
• updating Windows 10
• going back to an old build of Windows 10
• reinstalling my video card driver
• trying a new HDMI cable (doesn't work for my laptop but works for another laptop)
• trying on another TV (also black screen + no signal)

I googled "Dell G3 15 HDMI no signal" but didn't find any thread with a problem like mine, and all the ones that were similar had simple solutions that I already tried.

The problem definitely comes from my Dell laptop since I tried with another laptop on 2 different monitors and had no problems. I don't remember if there was a Windows update on the night before it didn't work anymore.

I would gladly appreciate if you could help me. I'm running out of solutions and I need my monitor