tcl resolution hdmi vga monitor display ugly

After checking I found that it was because I was using a hmdi to vga adapter. This adapter needs to be powered by usb, and when I unplugged the usb from the back of the case, the rear fan immediately stopped spinning. But plug the usb power supply up, the rear fan immediately rotates. Why is...

So I just built a new PC and it seems to be working well, except the fan is extremely loud. I have never heard a PC with a fan this loud. I have downloaded SpeedFan and tried messing with the speed, but it didn't work, I assume I don't have the ability to alter the system fan speed...