I highly, highly doubt there would be enough to kill you in a computer no matter what the intake is, the reason I know this is because our population would be a hell of a lot smaller than it is considering that there are more devices than people on the planet.
It is true though that it can kill your sperm cells, but this only happens if you have a laptop on your lap for an excessive amount of time or if you have your phone near your balls for an excessive amount of time. All of that can be prevented from either setting up your laptop where it should be (a desk) or not playing angry birds on your cock.
In regards to setting your brightness lower, that's to do with your monitor. Most monitors have the toggle buttons on the actual monitor but if you're still completely mind-boggled then go to your control panel and change them there.
Also, please do not believe everything you read on the internet.
