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The fan alert warning when you start up the computer says "WARNING CPU FAN FAILURE SHUTTING DOWN cPU TO AVOID DAMAGE" AND THEN IT SHUTS OFF.

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I am going to assume (and we all know what assume means) - that you have a desktop. With the power disconnected, take the side of your computer off. Take a can of air (you can get them anywhere) and blow out your fans (all of them) dust and dirt can cause the fan to stop working, dirt and dust can even short out your computer. I don't suggest using a vacume cleaner - for the parts (on a vacume cleaner) are so large you can bump a circuit or diode that can break off.

Once you have air cleaned the fans, while the side is still off, power up your computer and see if any of your fans are not working, if one is not - that is what needs to be replaced.

Posted on Mar 30, 2008

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Why is my computer shutting down without warning?


If the computer powers off with no warning - just turns off instantly, this is usually caused by overheating. If it is a desktop PC, the most likely culprit is the CPU fan/heatsink. It may need to be cleared of dust and new thermal paste applied to the CPU. If you aren't comfortable doing this, take it to your nearest computer repair shop.

If you have a laptop, it will be harder to access the CPU. Take it to your computer repair shop and ask them to check the CPU and heatsink.

Jul 11, 2014 | Microsoft Windows 7 Home Premium 64BIT...

1 Answer

I have a HP Pavilion dv4-1225dx and it keeps shutting off with no warning...WHY?


If it is heating up, it is shutting down to protect the CPU. your Fan inside the compiuter is probably not working... Try ( with the computer off ) blowing compressed air into the cooling ducts, and blow out the dust. be carefull not to over spin the fan, that wizzing sound you might hear... If it goes too fast, it will break the fan, or worse - so short bursts of air and you will be good...

Jan 25, 2012 | Computers & Internet

3 Answers

Sony Vaio has started shutting down unexpectedly. Restart in safe mode and run event log with no results returned. Shutdown and restart. Starts normally but then shuts down within 2 min. Repeat process,...


Your pc CPU FAN is not working, you need open it and clean fan,, and under fan, on CPU there is termo cream, don't frgot about it, you need clean it and put new termocream. it is nessasary for cool CPU, that Cpu can not be warm.

Jun 11, 2011 | Sony VAIO Laptop

1 Answer

WHEN I TURN MY COMPUTER ON A ERROR MESSAGE COMES ON "CPU FAN TO LOW"


This message is a warning that the CPU cooling fan is no longer turning fast enough to adequately cool the CPU. You should not use your computer until the fan is replaced.or the CPU could be permanently damaged as a result of over-heating.

Unless you have replaced these fans before, I would advise you to have the fan replaced by a PC technician as it's pretty easy to damage the processor when removing/installing the fan.

If this information is helpful to you, please rate me on the FixYa website.

Rich

Nov 28, 2010 | Computers & Internet

2 Answers

My Toshiba P35-S611 shuts down without warning a short time (2 min-45 min) after it boots up. The battery isn't hot but the heat dissipation fins in the back are very hot.


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.

May 09, 2010 | Toshiba Satellite P35-S611 Notebook

1 Answer

My laptop shut down after powering out with no warning and will not restart.... Toshiba L550 screen stays black but when I hit the enter key it beeps........any suggestions


“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.

May 04, 2010 | Toshiba Computers & Internet

1 Answer

Cpu fan not working


If the CPU fan is actually spinning (make sure you're looking at the right one - it should be the fan mounted directly onto a big circular heat sink near the top of your motherboard), then it sounds like your mobo has a faulty sensor. If it's still under warranty, get it changed for a new one.

Mar 09, 2010 | HP Computers & Internet

2 Answers

My laptop gets heat and shutdown


“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 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.

Feb 27, 2010 | Compaq Evo N610C Notebook

1 Answer

All computer fans starts ok but trips with notice,


You may hear the case fans running. Remove PC cover and check CPU fan and replace, it may not be running at full speed.

Sep 23, 2009 | HP Compaq d530 SFF PC Desktop

1 Answer

CPU fan stops, computer shuts down


You must have the CPU fan plugged into the CPU fan power connector or the system can not monitor the fans speed. Your PC will shut down & give you that message. (The fan must be connected to the correct power plug).
If when you did replace the CPU's fan & had to remove the heat sink, which is where the fan screws into & did not clean the old thermal grease off the CPU & heatsink & replace with new thermal grease than your CPU will still overheat. If you add thermal grease over top of old thermal grease your CPU will over heat.
This is all a balancing act. If any one is not correct your system will shut down. (This is better than killing the CPU).
To remove old thermal grease use a clean cloth damped with house hold alcohol & use the same on the bottom of the heatsink. Please allow plenty of time for the alcohol to dry.

Good Luck! Take your time.
Mike

Mar 30, 2008 | HP (P2074-63003) Motherboard

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