Radiator fan not working on Honda civic 96 ex?

I checked the fan itself by hooking it up to the battery and it works, then i checked the relay by putting a paperclip in the fan switch and ut works so i thought it had to be the cooling fan switch so i bought that and put it in. But the fan would still not turn on. I then changed the thermostat with new gasket but still doesn't work any advice? I have been using the paperclip method to keep the fan running enough to get me to class but i don't want to rely on it to much especially if it happens to fall off during driving. And yes i know the fan is supposed to come in automatically is the engine gets hot enough but when it still doesn't come on when there is smoke coming from the radiator then im sure i have a problem. Also i bleed the system to remove the bubbles and yes it still does not work. Could a blown headgasket be the problem?

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