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OverheatingWhen the CPU overheats then it will shut down (i.e. thermaloverload) and won't boot up again until it has cooled down. If this is theproblem is not fixed then the CPU will eventually fail. A faulty fan causes the problem or the fan and heat sink assembly are cloggedwith 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 surethe vents are clear and dust free. Use a small brush and can of compressed airto do this.
The laptop maybe overheating. When the CPU overheats then it will shut down (i.e. thermaloverload) and won't boot up again until it has cooled down. If this is theproblem is not fixed then the CPU will eventually fail. A faulty fan causes the problem or the fan and heat sink assembly are cloggedwith 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 surethe vents are clear and dust free. Use a can of compressed air to do this.
my daughters hp 6735s had the fan running all the time issue, having got fed up with this I decided to try to fix it. I downloaded the service manual from the hp website and dismanteld the laptop to remove the motherboard. The fan defuser had some dust but not much, so I removed the heatsink that covers the cpu and gpu. I noticed the cpu did have thermal compound that was in contact with the heatsink, however the gpu had compound on the chip but nothing touching the heatsink. I cleaned the heatsink, cpu and gpu with degreaser, then applied new silver themal compound from maplin. I made sure i also applied a thin coating to the heatsink. I refitted the heatsink and reassembled the laptop. I powered on the laptop and instantly noticed the laptop fan running at half speed which it should do, I installed a program from a dvd and left the laptop running and so far so good. If we had left this any longer I suspect the solder under the gpu would have become molten and then we could have had another issue which maybe we could not have fixed. I hope this helps you if you have similar issues.
use of spirits in a keyboard is not recommended, it will eatup and destroy the rubber compounds that make the keys work. It can also damage the electronics inside. Find some canned air, try to dry it out as best you can with the air between the keys. Then try not to use it until it comes back to life. Until then try a usb keyboard in its place. Worst case scenario you will need to replace the keypad of the notebook. Its pretty easy fix though.
Best thing to clean keyboards is canned air and windex on a paper towel for the key surfaces only.
hope that helps. cheers
Have you tried another power cord? If you try another power cord, and it still does the same thing, then I think your laptop is having a power problem. You need to take is to a technician to fix the problem for you.
Most likely from the back (the underside) where the fan/s are located. You will need to remove the fan/heatsink to get to the CPU. The CPU is locked in place with a zero insertion socket, you need the turn the locking screw 90 degrees to release the CPU.
Be careful when you insert the new CPU, there is a notch that indicates the orientation of the CPU to the socket.
After installing the CPU don't forget to put some heatsink compound on the CPU before installing the fan/heatsink.