Question about Lenovo ThinkPad T61 Notebook

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Lenovo T61 keeps shutting down for no reason. Repair shop took out fan and checked it, works fine. They also blew out dust from vents. Problem still there. I installed a CPU temp utility pgm and shows temp at about 50 deg C when it shuts down. What could be causing this?

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Automatic shutdown is always cause of overheating, busted heatsink/ fan/motherboard. if the fan and heatsink wasnt replaced yet though they check it fine i would still recommend replacing it. if the problem persists a mainboard replacement would be the last part needs to be replaced.

Posted on Dec 31, 2010

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Lenovo z560 cpu overheating problem solved


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.

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My lenovo ideapad z560(core3i,2gb ram) keeps shutting down automatically.... havent been able to identify any specific reasons for it.. sometimes its stuts down just after bootin...or jst in d middle of...


Hi,

I suggest try to check these things on your machine.

->Check if the machine is Overheating.
->Check which part of the machine is Overheating.
->See if the Fan of the machine is Running(Feel if the air vent of the machine)

Cause of Automatic Shutdown:
-Memory
-Hard Drive
-Fan is not working

Most likely those are the cause of the machine keeps on shutting down unexpectedly.

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My acer extensa 5420 keeps shutting down like its over heating but i do not think it is over heating due to the fact i have 2 cool down fans on my computer(you set laptop on it and two fans blow on the...


Shut the system off, remove the battery and unplug everything. Blow through all the air vents with a can of compressed air. Keep blasting air in there until dust quits coming out. The reason I offer this suggestion is because it sounds like the system may be overheating, as you described. The cooling fans are great, but if the heatsinks get totally clogged with dust, the fans can't remove the heat as quickly. I don't know that this will fix your problem, but it's really easy and cheap to try, and a good place to start.

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There are a couple of things that can go wrong with it. The most common thing on laptops is overheating.

You will know if your laptop is overheating if it happens one ore more of the following:
-The keyboard and the bottom of your laptop are very hot when the laptop is working.
-The CPU fans are working all the time at maximum rotation speed and operate much louder than before.
-The laptop suddenly shuts down by itself without warning. When it just started, the laptop was shutting down after 1-2 hours and how it shuts down after 5-10 minutes of operation.
-The laptop works fine when it runs idle, but shuts down as soon as you start using any memory demanding applications (DVD player, image editing software, video editing software, etc.).
Follow this steps to avoid overheating:
-Don't use your laptop in full sunlight for extended periods
-Don't leave the laptop in a closed car on a sunny day
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-Turn off your laptop before putting it in your carry bag
-Turn off your laptop when not in use for a long period
-Work on an even surface as much as possible, not on your lap!
-Clean the air vents in your laptop regularly by using a can of compressed air
-Get more space under your computer by propping it up on something when it's on a desk
-Consider purchasing a laptop cooling pad
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To clean your laptop's cooling system:
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-Get a can of compressed air and blow it into all vents around your computer - this should clear out any dust and hair.
-Do Not use a vacuum cleaner

If it is not overheating, then it is a hardware failure. Could be the RAM memory, processor or the motherboard. You can test the RAM with this program: http://hcidesign.com/memtest/MemTest.zip

If RAM is ok, then only replacing hardware equipment could corner the problem.

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If this doesn't work you could purchase a replacement fan and fit this to the CPU.

Would you kindly rate my answer please if this has helped resolve the problem - thanks :)

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Check if the system is overheating.

You can try to clean the cooling vents using a can of compressed air or a vacuum cleaner (make sure to turn off the system and disconnect battery and charger before you try this).

If the processor heatsink/fan assembly is clogged with dusts, it can cause this problem.

You need to make sure that the processor heatsink/ fan assembly is clean of any dusts.


The following link will give some idea about how to clean the heat sink

http://www.laptoprepair101.com/laptop/2006/01/04/toshiba-laptop-overheating/

(it is for a different make/ model, but the principles will be same.)


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Check the fan to see if it spins freely and there are no dust clogging the fan and heatsink assemble, remove and vacuum the dust, if the fan is faulty, replace it.

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