“My Toshiba 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:

  1. The keyboard and the bottom of your laptop are very hot when the laptop is working.
  2. The CPU fans are working all the time at maximum rotation speed and operate much louder than before.
  3. 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.
  4. 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.).


Solution:

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 clogged.

  1. 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 (for example Toshiba Satellite A70/A75) you have to open the laptop case all the way down.
  2. Carefully disconnect 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.
  3. Clean the fan and the heatsink with compressed air.
  4. I would also recommend removing old thermal grease from the CPU and applying new grease for better heat conductivity.


UPDATE: I just received a nice tip from MC N’Colorado. I think it could be useful for all of you with guys:

I decided to use a shop vac to suck the dust out and it worked. I tested it by letting the machine run all night and it worked. It’s been a couple of weeks now and I’m glad I did it. I was ready to take the machine apart, now I’m glad I didn’t. I’d suggest you use a heavy duty shop vac to clean out the fan and heat sinks first.

I agree. Try to fix the problem without taking the laptop apart first but I would recommend using a powerful air compressor instead of a vacuum cleaner.

If your laptop is still under warranty, you can take it to any Toshiba Authorize Service Provider and fix the problem at no charge to you.

Toshiba laptop disassembly guides with pictures and instructions.

 

Toshiba Satellite A15 Clogged Heatsink

Toshiba Satellite A15 Clogged Fan

 

Toshiba Satellite A35 Clogged Heatsink

Toshiba Satellite A35 Clogged Heatsink

 

Toshiba Satellite P15 Clogged Heatsink. Absolute champion!

 

Toshiba Satellite P15 Clogged Heatsink

 

Laptop Repair Videos

 

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1,069 Responses to “Why my Toshiba laptop suddenly shuts down by itself without warning?”

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  1. 250
    cj2600 Says:

    Cjones,
    You shouldn’t have any problem if you just replace the old drive with a new one. No drivers needed.

  2. 249
    cjones Says:

    I have an A75-S206. If I wanted to put the DVD burner from an A75-S226 in the 206 can I just slip it in place of the old drive. Is there anything else I will need to do ie. drivers etc. Thanks cj.

  3. 248
    cj2600 Says:

    Judy,
    Did you plug fan cables back into the system board? Unfortunately, if you didn’t, you’ll have to take the laptop apart again. In Satellite A75 there is no way to plug them back without taking the laptop apart. Satellite A75 fan has 2 fans and 2 connectors. May be you plugged in only one of them?
    You can barely see one connector if you remove the memory/wireless card cover on the bottom of the laptop. That’s would be enough to check if it’s plugged.
    When you turn on the laptop, both fans have to start spinning. You can see fans through the grill on the bottom. Do they spin at all?

    cjones is right. You’ll have to coonect the ground cable. It has to be secured by F3 screw located under the keyboard.

  4. 247
    cj2600 Says:

    Carew,
    I’m not sure if you can burn up fans but when I clean them with compressed air I block fans just in case. I usually take the fan out and block fans with my fingers. I use very powerful air compressor and if I don’t block fans, they spin really fast.

  5. 246
    cj2600 Says:

    Misty,
    I don’t have a guide for Compaq Armada M700. If you experience the same problem as I described in the post, try to blow off the fan first.

  6. 245
    cjones Says:

    Judy,
    I am not an expert but when you took apart the computer and unhooked the display cable there was another black wire secured by a screw. This is a ground make sure you hooked it back up properly. And about the fans cj will probably know the answer to that and the display problem. Just thought i might add a little advice!

  7. 244
    Judy Says:

    Hello and first, thank you for the help thus far.

    We had an overheating problem with our A75. I’ve gone through all off the steps, cleaned, applied new thermal grease and put it all back together. Now, the computer boots up, however the fans are not running. So that’s the first problem as it won’t stay on long before shutting down. Also the display is “funky” . . . don’t know how else to discribe, resolution is off and there seams to be some ’snow’.

    If you could help address the fan problem first I would be most grateful. Any any ideas on the display problem would be much appreciated also.

    Thank you again.

  8. 243
    Carew Rowell Says:

    I was told that you needed to be careful when you use compressed air so that you don’t burn the fans up. What can I use to keep the fans from spinning that is non-conductive?

  9. 242
    Saz Says:

    Hi there, I tried the idea above of vacuming out the vents from my Toshiba laptop, as my lap top too was shutting itself off everytime i tried to play a game or watch a dvd, and it had neever done this until now. After vacuming it today as advised, I’ve been playing on games for hours now and SUCCESS! No shutdown! I advise anyone with the same problem with any kind of laptop to try the same. Great tip thanks alot, saved having to take it to a pc store to get it sorted.

    All the best,

    Sarah :)

  10. 241
    misty Says:

    my laptop is doing the same thing but it is a compaq armada m700 can you help me?

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