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Try blowing out any dust from around the fan with compressed air. If the fan is turning on and off a lot, this could be normal, depending on your processor, but if the system just shuts down fully and randomly, it would be a heat issue. The CPU is overheating and the failsafe mechanism is to instantly shut your computer down. The only way to avoid this is to raise the CPU shutdown temp in the BIOS settings, or if you can access the CPU, remove it and apply new, quality thermal grease. Also, ensure the fan is operating correctly during use and dont block any air intake or exhaust ports.
The fans change speed depending on the temperature the sensors detect.
Give your machine a thourough cleaning.
The CPU sensor is usually located under the CPU if it's loaded with dust it may think it's hotter then need be and kicks the fan up.
how much heat sync compund did you apply? to much can damnage the computer, Also i would reccommended getting a Can of Compressed Air From Wal-Mart or Besdt Buy, And Cleaning the various parts of the computer.
Hi, All the factory fitted CPUs are having such heat sinks as previously u were having. Check on the backside there will be small plastic covers where screws fit these could be removed by screw driver but u can purchase that heat sink or can use previous heatsink as well if it is working.
No this is normal for a fan to speed up or slow down. It all depends on what the CPU is doing. FOr example, if its doing lots of graphics (3D gaming etc) then it gets hotter and the fan speeds up to cool it.
If your worried you can use a heat monitor to check if things are ok. You have an intel motherboard?? If so go here to download a monitor: http://www.intel.com/design/motherbd/active.htm
If your unsure about the motherboard (or you dont know if you already have a heat monitor) then try this one: http://www.majorgeeks.com/download.php?det=311
I hope this helps you, and if it does let me know by rating this answer.
If you DO NOT hear the fan running, have it looked at by a professional. Your fan may have died. If you can hear the fan running, blow out the fan exhaust port in the opposite direction of normal air flow. Especially on lap tops, the heat sink cooling fins become completely clogged with dust. When this happens the processor overheats causing it to run slow and eventually shuts itself down to keep from going super nova. You should blow it out at least once or twice a year. Also, if you use your laptop on the couch or in bed, place it on a hard surface like a cutting board or something similar that will allow air to flow underneath the computer. This will also help prevent dust from the cushions or blankets and such from clogging the cooling fins on the heat sink faster than usual. Remember blow it out in the opposite direction of normal air flow. You want to blow the dust out the same passage it came in through.
Hi James, replace the fan or If it's still under warranty have it serviced. Suggest you stop turning it on until the fan is replaced. It could be the fan cooling the CPU. You don't want it to fry.
The shut down process is normal when over heating is detected by the system.