I have toshiba A135 S 4527...from july 2007............some times its cooling fan stop functioning...........ultimately processor also freezes for some time...then it again start working..............i am in Haiti..where there is no TOSHIBA service centre...............i am waiting help from Toshiba community.............a friend from UNITED NATIONS HAITI
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Re: cooling fan stop working
It's normal for the fan to stop and start, as needed. However, it sounds as if the heat sink attached to the processor and fan may be clogged with dust/fuzz/hair, etc. If you can, vacuum or blow air back through the ventilation ports to clear the debris.
This usually causes the fan to run constantly. It's possible that you need to adjust the power management settings in control panel-toshiba power management.
Also,try keeping the laptop in a cool place and see if it makes a difference.
Let me know how it works.
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My guess is that your electric fan is NOT operating at all. Under normal conditions, just going down the highway, your cooling system will function just fine without a fan running. The air flow through the radiator is adequate to keep things cool. However, when you stop, you quickly get into an "overheat" situation. Actually, you should be able to hear your fan begin operating when your engine temperature starts climbing or your air conditioner requires the fan to do its thing. Note: If you've ever severely overheated your engine, your problems may be worse than just a fan not running, but you really do need to confirm whether your fan is operating correctly, or not. Another note: I had a vehicle with a tendency to overheat when stopped. It turned out to be a faulty (leaking) pressure cap on the cooling system.
My best advice is to ask a local mechanic to have a look for you as the cause could be a multitude of problems but i would suspect that the fact that when the thermostat stuck it has caused damage to the head gasket and you may even need the head skimmed as well so be prepared for a expensive job or trade this vehicle in quick
I THINK you mean, Laptop stops working after heating up... If that is so, that means your Cooling system is not functioning, and the computer has turned itself off to protect your MOTHERBOARD, CPU, RAM and HDD from heat damage. Which means, you can likely get your cooling fan replaced in a shop for about 100 bucks (outside of warranty) and have your pc back the way it was when you got it new.
THe shutting down is your laptop's thermal protection. It is trying to keep the CPU from being destroyed. You should stop using it until you fix it, or you will destroy it.
The fans are not hard to replace and toshiba disassembly is fairly straight forward. Just get your #1 and #2 phillips head screw drivers and pay attention to how you take it apart.
Call Toshiba and order replacement fans for your laptop as they will not set you back very much.
If u have a laptop (that's what i found out that toshiba Qosmio is ) then is no problem that the fans stop (as long as the temp. is within the normal working margins ). U might have a setting problem - a bad software, managing the cooling system; - a bad BIOS setting regarding system temperature protection; - or the temperature detectors malfunctions, and must be changed (if possible)
If the fan has stopped, then the processor will overheat. Most vendors have protection so that a non-working fan is detected and the unit will not power up with detecting its rotation. Seems like a repair shop job I'm afraid.