Do the symptoms ever change? Lessen/worsen? (turning off the computer doesn't count)
Any refrigerators, blowers, or large powered devices near the system? (Rawb's interference item above.) Have you tried the system in another location? Even just a few feet away, maybe rotated 90 degrees?
It's possible for a video card's color curve to be screwy. Sometimes this can happen when updating drivers, if the old and new ramps aren't compatible. When you were changing drivers, did you remember to completely remove the old and reboot before installing the new? Look for color and gamma tabs in your video properties. Usually buried in "advanced." Reset to "defaults" and then try flattening or exaggerating the ramp to see its effect on the problem.
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There are a vast number of people who are uninformed and heavily propagandized, but fundamentally decent. The propaganda that inundates them is effective when unchallenged, but much of it goes only skin deep. If they can be brought to raise questions and apply their decent instincts and basic intelligence, many people quickly escape the confines of the doctrinal system and are willing to do something to help others who are really suffering and oppressed." -Manufacturing Consent: Noam Chomsky and the Media, p. 195
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