problems i'm experiencing with my monitor

sorry to come off as a noob, and maybe this is a stupid question but:

there was something flying around inside of it, i could see it on screen. but strangely, it didnt fly on the outside.
yeah i know its already sounding weird.
it was flying like a dot hologram, so i'm smacking the monitor, and it just keeps flying around, till i punched it, now the dot stayed still in the middle of the screen.
and btw, its a 17 or 18in flat screen monitor, with a fawking burnt dot in the middle.
people have said that its a burnt pixel, but how did it fly around the monitor before?
can i try to open it and clean it? or take it somewhere?
its a ultrasharp dell flat panel.
thanks in advance everyone.

ok rules..
1) don't punch an LCD
2) never punch an LCD (even if it makes fun of your mom)

It could be fixable but probably gonna cost ya some good $ if you don't have a warrenty. I would highly suggest not opening it yourself also as you'll surely only do more harm then good by doing so. If it is indeed a dead pixel its not something you can just brush off ... you would need to replace the whole screen .

sorry, i typed that in a hurry.

i didn't exactly punch it.

i tapped the screen with my middle finger, i was angry while typing so i wrote punch.

anyhow, why was it moving? and then stopped in that area? i was floating all around the screen.

thanks for your help

and when something is on screen in that area it still shows fine, you just see the hologram like glowing dot. sort of looks like its behind what i'm writing.