Red circle on my screen. wont come off

[AndrewR23]

What is it? I can only see it on dark backgrounds.

 

[cas85]

a screenshot would really help see what you mean

 

[AndrewR23]

a screenshot would really help see what you mean

Just like dead pixels dont show in a screenshot, this doesnt either.

 

[snaky69]

Just like dead pixels dont show in a screenshot, this doesnt either.

Then I think you answered your own question: dead, damaged or stuck pixels.

 

[slammer99uk]

Can you take a shot of it with a digital camera?

Is it about the same size as the Apple logo on the lid?

 

[Macsavvytech]

Try using JScreenFix, the pixels sound like they may just be stuck.
http://www.jscreenfix.com/basic.php