My monitor has dead pixels

At first. I thought this monitor was perfect. Great colours. Great picture quality. Then I noticed it had dead pixels. Only noticed one at first. Then 1 more. Then another. In total it has 3 dead pixels and I'm upset about this. I brought this to be my second gaming screen so I can have tv in the background while playing my games. The seller asked me to prove I had the dead pixels by using a softwear. I don't have a computer as I only have a switch and PS4. Totally lame.

Verified purchase: Yes | Condition: New