Toshiba Satellite L45-S7423 Notebook Logo
Joanne Bagley Posted on Jun 09, 2012
Answered by a Fixya Expert

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Fan not working powers up then off with black screen

When i press the power button it lights up then goes off the screen is black and the fan is not working

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  • Toshiba Master 32,281 Answers
  • Posted on Jun 10, 2012
Anonymous
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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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The Experts

Kyocera HP Expert

  • 532 Answers
  • Posted on Mar 09, 2009

SOURCE: laptop won't power on

change the color converter card.

I’m happy to help further over the phone at https://www.6ya.com/expert/mustafa_06f84c65ab5cc745

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Anonymous

  • 3 Answers
  • Posted on Aug 16, 2008

SOURCE: Toshiba Satellite P200 doesn't boot

Try pressing FN/F5 keys simultaneously, or the key that toggles internal/external Display. Look for the double screen Icons on the keys.

Tap the Pause Key.

Restart and press and hold F8 key when Toshiba logo appears. When the boot Menu appears, select Last Known Good Configuration.

If all else fails ther should be a reset button on the side of the LT. Consult owners Manual for location

Anonymous

  • 659 Answers
  • Posted on Oct 12, 2008

SOURCE: toshiba satellite a105 blank screen, blinking battery light

well to me either there is a issue with the power supply or the power cord. I have had a bunch of laptops where the power cords have to be a certain way or nothing will respond. this could be and since it is thinking that it is running in battery mode then it drains and then causes the laptop to turn off or go into hibernation due to the fact that the setting you set for the battery where probably on the "when plugged in" not the running off the battery mode.

it leads me to think that its the power supply because its the most common issue with this but I think that the best solution would be to either find someone that can test the power supply and find the break in the line or buy a new one to test ushally if you buy one from a store bigger named store outfit and use the power supply to test you can ushally get your money back or goto a local computer shop and get them to match up the power supply or see if they have a adaptor loose that can be used for testing.

These could be possible solutions but like I said I am almost 100% sure that its the power supply and not the laptop because even if the battery is not in the laptop the unit should still power up. on most laptops that is.

So that might be another thing that you would like to check but I highly doubt that it is that. because even a dead battery will allow the power adaptor to run on the laptop even if it dosent charge.

hope this helps and hope it works for you. let me know how you make out and if this made any sort of sence to you haha

marley mcelhinney

  • 490 Answers
  • Posted on May 27, 2009

SOURCE: toshiba equium m40x won't power up

whats happening is that the cpu is overheating and shutting down the computer due to your fan not spinning, if you wish to test this remove the bottom panel and remove the fan and its cooling tubes should all be one part (quite easy 3 or 4 bolts) and blow on the cpu or put a pedistal fan facing it or any other form of cooling that wont damage it, and try to start it if it boots for a while it is the fan and you will need to replace it, i had this exact problem yesterday

Anonymous

  • 2567 Answers
  • Posted on Sep 18, 2010

SOURCE: toshiba laptop a210-15k wont turn

1. Take the battery out of the laptop & try to turn on the laptop using power adapter only. If the computer turns on, then the battery is defective & needs to be replaced.
2. Make sure the power adapter is not defective. Test the output voltage of the power adapter using a voltmeter. Compare the voltmeter reading to the nominal value written on the adapter or the laptop.
3. If you have another processor which is compatible with your laptop's model, try swapping processors & test to see if the laptop will work.
4. The motherboard could be defective & needs to be replaced.

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and boot it
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