I'm using 1024MB ATI Radeon HD 5400 Series (ATI AIB). When I checked the graphic card info using a program called Speccy, It said the temperature was fluctuating between 75 to 80 C and it's alarming with a red coloured number. The fan is also spinning hard and noisy. I'm not sure if it's the fan from the graphic card. Is it a problem and how can I fix this? Thank you.