Dead Pixels?

[Nephasth]

Nope, it's a ---smurfing--- bug inside the screen! Son of a ---smurfette---.

[spoot]

Could still be right if the bugs name was "Pixel".   

[MadMike]

They are very common here in UK, a bug called thrips, get in everything in summer, I close the windows and doors in summer to stop them getting in but some still get in, but luckily not had any in my monitor/TV for a  few years.  They are attracted to the heat I think, end up dying on the screen and they stick to it so no amount of banging will make it fall down.

[Nephasth]

Not a thrip. It's a gnat.