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the laptop cannot ventilate the hot air out.may be a lot of dust covered the cpu fan.go to any service centre and get it cleaned.if you can do it yourself then its fine.it is becoming too hot and is shutting down.
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.
The system is heating up really fast is caused by not enough cool air being directed to your CPU,
Turn off the computer un-plug everything from the wall and carefully remove the side panel, not touching anything on the inside, look for the fan should be clearly to see, after that look closely enough to see behind the fan if its all dirty and filled with un-known substances then it requires cleaning. you can remove the screws holding the fan in place to give it a light clean, and put the fan back on, before putting the side panel back on check to make sure the screws holding the lump of metal is tight, after all that turn the computer back on and it should remain on.
The main cause to why the computer shuts down is because the CPU gets so hot the computer automatically shuts itself down to protect itself from over heating and causing damage.
First, Laptop shuts down by itself when the processor/ CPU temperature exceeds the safe temperature limit. Laptop heating issue generally occurs due to fan
failure, which may damage the system, if not checked properly. Another
most likely cause of overheating is the dust present inside the laptop, which clogs
the fan and heatsink. 1. Make sure the fan is running. (if not it needs replacement) 2. Clean the fan and heat sink (thermal module). Click here for laptop disassembly instructions and refer to Removing the System Fan/Thermal Module after removing the outer cover. Take out the fan and heat sink. clean them with the help of tooth brush and put it back. Also, repair manual can be searched online or downloaded for referrence. The
procedure is very simple, but if you are not comfortable with working
inside electronics, I suggest that you should get you laptop checked
by a professional for servicing (if required). I believe immediate
action is required to prevent any damage to your machine and data.
Hope it Helps! Let me know if i could be of any further assistance. CreativeTECH
You should look for the following answers. (1) Are you operating your laptop in a in a hot and dusty environment (If yes you should know that computers do not like hot and dusty environments and they shut down to avoid a complete burn out of the machine more over the dust particles also can destroy the hardware and block internal fan ventilation ducts in between the CPU and the fan). (2) When the your laptop PC shuts down place your hand underneath the laptop and try to feel hot spots. If you find areas unusually heated then this is the main cause of the shut down. (3) If just after the shut down and a good usage the Laptop is cool then underneath than overheating shut down might not be the case. If you determined that heating is the cause and you cannot change your environment than you should look for other heavy duty laptops that are robustly designed for hot environments. I do not think that resting the BIOS can cause this.
A laptop locks up or shuts down when it get very hot. The CPU shuts down (thermal overload) when it overheats and will not boot up until it has cooled down. If this problem is not fixed, eventually the CPU will fail.
This problem could be caused be a faulty CPU fan and/or the CPU and heat sink assemble is clogged with dust.
Check the CPU fan to see if the fan blade spins freely (it may have a seized bearing), if not replace the fan. If the fan and heatsink is clogged with dust, clean and remove the dust.
If additional cooling is required and there are ventilation grills on the bottom of the laptop, then purchase a laptop cooling pad. Place the laptop on the cooling pad, these pads have fans that direct air into the grills at the bottom of the laptop.
You are running into a CPU overheat issue.
1. can you feel or hear the cooling fan come on at all? If so try and use compressed air can to clean it out.. they get tremendously dirty. You can also try a vacuum hose, but cover nozzle with hand and only hold next to cooling fan outlet and nowehre else with laptop off and unplugged. Dont get near keys or other parts as will damage. Dont use SHOP VAC either.
2. If Cooling fan is NOT Coming on you can try a laptop cooling pad. these are external units by Targus and other companies that have cooling fans to supplement a laptop units cooling fan. You can try this to see if airflow is your problem.
3. If you recently ran encryption software, a new antivirus program, or upgraded to Windows 7 it is possible that your culprit is the unit is not cycling. Meaning the hard drive is continuously being accessed and the CPU is in constant service... this can cause overheating as well.
Overheating usually occurs when the vents are obstructed or full of dust. Overheating causes that laptop to slow down in terms of processor speed, if the laptop overheats too much then it will shut down to protect itself from damage.
I own a Laptop Toshiba Satellite A75-S2131.
This series have a problem with the cooling flow to the processor.
The processor overheats and the laptop shuts down.To solve this particular problem you must tear down the laptop and clean up the processor heatsink (you will find it totally plugged or partially dirty).
Find in the internet the step by step instructions (with photos) for dismantling this laptop. Do not forget to apply thermal paste between processor & heatsink.
The Laptop Shuts Down, Due the Processor Reaching It,s Heat Limitations, as set by the Bios/Motherboard Et,c. This Is A Safety function to Avoid Any Further Damage To The CPU Or Other internal Hardware. If the CPU Fan is not functioning, this is likely the cause. To Remedy this Problem, you,d look at removing the faulty fan ( Replace With New ) Or fully functioning Fan. And replacing the thermal Patch Or Paste, Between The CPU ( Processor ) And Heatsink Or Mating surface Between CPU/FAN.
I,d suggest not using the Laptop, until this has been repaired, as you will only cause more damage, which in turn. will become unrepairable. or very costly.
Mike @ Compurepair.