If you have actively used your hp6735s close to 3months and still working,do yourself this good to keep it going.If you are sure enough to uncouple this system,loose out the motherboard from the carcase,remove its heat-sink,check the coolant pad on its graphics chip,IF TOTALLY FLAT AND YOU CAN SEE THE GRAPHIC CHIP CORE DIRECTLY[due to heat],replace the bad coolant pad and you have successfully extended your system life-span.Couple the system back and on you go!!!.It is one of my controls on the system,Cheers,