I am SURE this has been asked/answered before, but I couldnt find anything when I searched. I have a Gateway EV700 and a Dell D1025TM. It is just an on and off squealing that is VERY high pitched and can be annoying, yet it doesnt do it other times. I am thinking it has something to do with the crt and the filters or electron guns inside the monitor, but I dont know how to stop it. (eventually it just stops)