After 30 minutes or so, the laptop just shuts off, I suspect it is a thermal shutdown, but I can not find a cpu temp monitor software that will work with this laptop. Does anyone have any suggestions on an app that will work?
I am taking it in to get cleaned and have the thermal paste renewed on the CPU, but want to be sure this is the problem
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Could be the CPU needs new thermal paste and reseating.this is usually a fail safe designed to protect the computer when the CPU is getting too hot.also check the cooling fan ......blocked vents as this may also cause overheating issues thus not cooling the internals which will activate thermal shutdown.
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.
laptop suddenly shuts down by itself without any warning. Sometimes it
works fine for hours, sometimes it shuts down in 10-15 minutes.”
This complaint we hear from our customers over and over again. About
15-20% of all Toshiba laptops we get for repair, suffer from an
overheating problem. Yep, OVERHEATING!
This is one of the
most common problems with Toshiba laptops we deal with. Indications of
laptop overheating problem:
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.).
If the CPU heatsink is
not clogged with dust and lint completely, you can use canned air and
just blow it inside the laptop through the openings on the bottom and on
the sides. It’s nice as a precaution measure, but it might not work if
your laptop already has a problem and the heatsink is completely
Open the laptop case,
so you can access the CPU fan and the heatsink. In some cases you can
access the heatsink through the latch on the bottom of the laptop.
Sometimes you have to open the laptop case all the way
the fan cables on the system board and remove the fan. If the fan makes
unusual sound when it spins (grinding sound), I would recommend to
replace the fan.
Clean the fan and the
heatsink with compressed air.
I would also
recommend removing old thermal grease from the CPU and applying new
grease for better heat conductivity.
This sounds like a overheating problem (a CPU thermal shutdown).
This is caused by a faulty fan or the heat-sink and fan is clogged with dust. Check the fan to see if it spins freely, if not replace the faulty fan. Check the fan/heatsink assembly and remove/vacuum the dust from these components.
The laptop is shutting down because the CPU is overheating (thermal shutdown) and if this problem is not fixed the CPU will eventually fail.
Replace the faulty fan and remove the dust from the heatsink.
While you are at it I suggest you apply fresh thermal paste on the CPU and hearsink.
The cpu get overheated and will shtdown to protect it. The fan continues to run until a CPU safe temperature is reached / sustained.
1. Use laptop on flat surface, not on pillow, carpet, bed, etc. that will restrict air flow. Using a can of compressed air, clear the air vents.
2. If the symptom continues, then the heat conductive paste between the cpu chip and the heatsink is no longer effective (hardened, too thin, etc.). Remove the heatsink and add thermal paste
($6 Radio Shack).
Your CPU is likely overheating. Very likely the thermal conducting material between the CPU chip and the heatsink may have shrunk and now impeades the thermal transfer. You may need to remove the heatsink and put new thermal paste and perhaps copper shim to restore the thermal contact to the heatsink.