I noticed that the fan is not rotating but when i opened the lap top, and switched on while opened, the fan responded only for a few seconds. This happen several other times i swiched on and off. Is there a sensor that instructs the fan to start rotating or could the cable be loose where i am not checking? Help
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get a blower >open the back cover of the hard disk or ram > blow the dust and close it will be ok, if not then get a qualified tech to open the laptop and spray the fan with a non-corrosive detergent or replace the fan.
When the CPU overheats then it will shut down (i.e. thermal overload) and won't boot up again until it has cooled down. If this is the problem is not fixed then the CPU will eventually fail. A faulty fan causes the problem or the fan and heat sink assembly are clogged with dust. Check the CPU fan to see if it spins freely, if not replace the fan. If the fan and heat sink is clogged with dust the remove the dust and make sure the vents are clear and dust free. Use a small brush and can of compressed air to do this.
It seems the game giving lots of pressure to your problem and there might be some dirt which is blocking your processor to cool down, So first I'll suggest you to Clean the Processor FAN dust properly and apply heat sink paste on top of the fan.
Remove the main battery and try again, if no change! the DC jack in the laptop is a common source of trouble and must be dismantled down to the motherboard level to address, bad solder connections are common under the plug, I recommend you have it fully assessed before repair.
make sure the laptop is fully powered off first by holding down the power button for about 5 seconds, then insert the battery and see if theres any change.
also try using just the power adapter without the battery and see if it starts.
It does sound like the problems you have could be largely down to the fan not running freely and allowing the processor to run hot. There for a new fan unit may be required. However a little trick to find out if over heating is the problem. Place the lap top in to a refrigerator for a couple of hours then leaving it placed in the fridge with the door open see if it will operate normally while sitting in the fridge.
If it does then the over heating factor is confirmed there for a new fan unit will solve the problems. This somewhat unorthodox method has worked for me on more than one occasion Hope this helps