I have a Dell desktop Inspiron 530s with an Intel dual core processor. T he cooling fan started running full speed all the time. Very noisy. I blew out the heatsink - didn't help. I downloaded a program called Speed Fan and it says my GPU temp is high (57C) and my temp 1 is high (124C). Touching the cpu heatsink does not feel even real warm. CPU usage seems normal. Any ideas?