I just purchased a new laptop with Intel HD 4400 with a dedicated NVIDIA GTX 970m graphic card. When I booted up everything was fine, but after I set up the computer I updated the NVIDIA drivers and it was one of the first things I did. Then I notice that there were two red pixels at the dark part of the screen. They are fixed in position.
Are these dead pixels? If not, what's the cause of this? How can I fix it?