It could be from your sinuses, lack of sleep, dehydration, stress, or environmental things like air pressure
Step 1 take medicine
Step 2 take a shower
It has to be a warm steamy shower
Step 3 drink 2 glasses of water but don't chug it like the milk challenge
Step 4 sleep
Looking at the computer screen will only make the headache worse
So if you really have to look at it turn the brightness as low as it can go