long

I have a problem with Acer Aspire 6930 . it extremely overheating under just youtube watching for example. it has separate removable VGA card Nvidia Geforce 9300GS. As I can monitor in Aida64 - the GPU temperature is over 80 Celsius . I have cleaned the dust from fan but not replaced the thermal pads on chip and cpu. What do you think, replacing them will be lower the temps, or my VGA chip is dying slowly. Also there are no picture corruption while playing videoclips yet. Best regards, Long