there are ants crawling inside my monitor screen

they're after the warmth, monitors and routers are a classic spot. don't spray anything into the vents, bug spray and electronics are a bad mix. unplug it and leave it off for a day or two so it goes cold, and put ant bait stations on the desk around it. the bait is what actually fixes it because the workers carry it back to the nest. also check for crumbs or a sticky drink ring nearby, that's usually why they found the desk in the first place. if some are stuck between the panel layers and won't come out, that's a repair shop job. opening the panel yourself will kill the warranty.