I had one on my screen and I fixed it by turning the screen on and opening windows paint and making the screen black so I could see it better and then using a smooth end cap off of a sharpie marker and rubbing the dot while pushing hard on it. but be careful not to push to hard or you will damage the screen.
Intel Core Duo 2 E6750 at 2.67 Ghz
Gigabyte GA-P35C-DS3R
EVGA GeForce 8800GTS 320MB OC
G.SKILL 4GB DDR2 800 PC2 6400 Dual Channell
2-320Gb sata raid
Antec Nine Hundred Black Computer Case
2-SCEPTRE X22WG-1080p Black 22"Widescreens