gpu warranty

Will changing my thermal paste void my gpus warranty? I have a gigabyte gaming oc 2080ti. It goes into a weird pulsing sound at idle. Fans keep turning on and off.

Hello, I am having some trouble with my GPU. I kept getting black screens in GPU intensive games / applications, such as Unigine Valley. The black screens are random and last for around 3 seconds. After using 2 different HDMI cables, 2 different monitors, multiple GPU drivers, new and old...