Okay, I'm still betting on vibrations (there are way too many factors to lock all of them, but hey.) but yet more options.
Hybrid solutions,
If C and E are true then you should find a herd of swine, cast the devil into the swine, and then drive them off a cliff. You can also try the old priest and a young priest approach, but we all know how that ends.
If A and E are true then you should make a circle around yourself and seal it with a drop of blood, this should shield the light from your ambient energy. Wait fifteen minutes, if the light goes back to normal then you need to find a way to cordon off all the electrical items in your house from energy, I recommend a faraday cage.
Or more options,
Option F: You have extremely powerful personal magnetism, I recommend shielding your hard drive and becoming a womanizer to reduce the problem.
Option G: You're actually dreaming, the darkening is a sign that you know you're asleep and this forum is merely your subliminal telling you to wake up.
Option H: You're a conduit for a method of RET, the energy causes a slight electro-magnetic burst as it travels through you. I recommend an MRI to see how bad the brain damage is and a last will and testament.
Option I: Aliens are scanning your brain and the ray disrupts electronics above your head, I recommend a tinfoil hat.
Option J: You have a powerful spirit bound to you on an item that you carry, probably something that you weren't allowed to carry during your middle school period, the spirit is draining ambient energy in order to manifest and look in on you.
Option K: You have really bad (Or great) luck, coincidence is possible though perhaps unlikely. (Compare to other options)