franko

thanks for reply, i have had the back off and cleaned what i could i will buy a can and give it a go but i cant understand why dust would stop the fan from spinning. But then i am not an expert.

hi ,i have an acer 6930g laptop which is 3 years old. recently the laptop has been overheating intermittently and i have realised that the fan is only working some off the time. i use speedfan to monitor the temps and have found a programme called read and write utility v1.4.9 which allows me to manually control the fan speed. i know by the monitoring that the fan is supposed to be on but only makes a high pitched whining noise as if the power is there but the motor isnt spinning, yet the next time it will be working perfectly. same for the manuall control, sometimes i can turn it on full speed but the next time it will just start whining. Any ideas? when it is whining i can even blow hard through the vents and sometimes the fan will kick on.