I have a Dell 5100 Inspiron with Windows XP installed. I must have downloaded something with some sort of virus or????? The second i turn my laptop on the fan turns on full blast and does no shut off. The fan being on full blast drains the battery in roughly 30mins flat and slows the whole computer down. Any idea what this is? Also when the fan turns on its completely cool, but 5 mins later the thing is hot as hell. I just ran spybot and it didnt help and i have Norton Corporate Anti Virus. Thanks