I'm having the same issue, my Toshiba Satellite doesn't turn on after shut it down. If I unplug the power source it is turn on, I'm not sure what can be the problem.
Any suggestion will be appreciate. Thanks
John

Pull all power from the machine including battery, now hold the power button for 30 secs, plug in the ac adaptor and switch on

It didn't worked. I can hear for few seconds the fan and after that nothing.
But it can be turn on battery and it's freezing when I plug the power.
What could be the problem ? Could be the DC jack ?

People have a nasty problem with sitting there laptops on their laps, Beds or sofa's, this blocks the fans underneath from cooling down the processor which eventually over heats and shuts down the machine, with persistent use in this way the processor becomes damaged and will no longer boot up the machine.

globalss: Have you tried using another adaptor? - remember to use one that as the same voltage as the one that came with your machine.

The other thing you can try is to remove the ram from the machine and try and turn it on without them - if it comes on, turn it off again and place your ram sticks in one by one, this will determine whether you have faulty ram or not.

From what i am hearing from the posts above it sounds like it could be a power problem either with the dc jack on the machine or your power adaptors.

Good Luck Everyone - I know Toshiba's have dodgy main boards.

Take your laptop apart and find the chip with a white and a black wire connected to the chip and unscrew it and push it in as far as it will go and screw it back in that worked for my 2 toshiba laptops

my lap top is not turning on

fans not working
screen not working

nothing happens when i turn on except the blue light that glows when we power on .i havnt used it for 2 days.....but after the 2 nd day this happens........
my laptop is toshiba satelite a201cr

nothing happens when i turn on except the blue light that glows when we power on .i havnt used it for 2 days.....but after the 2 nd day this happens........

Same exact problem..Is this the board problem? i dont know what to do with this laptop..Throw it ? or sell its parts?

the model is toshiba a100 and the blue indicator is on when i put the charger but no reaction.Even the fans are dead..

I have a Toshiba Satelitepro a100
On switch on the fan runs for 20 sec. then stops this results in the machine locking up.. Could somone please inform me how to fix this problem.( How to make the fan run all the time)
Very pleased for any information
Best regards
tony

Toshiba Pro A100 problem With fan not running.
The problem has now been solved. The problem was caused by an upgrade of Zone Alarm which has now included antivirus and spywear . This was in conflict with Avast that was installed on my comp. The removal of Avast solved the problem. The fan dos's not run all the time this is normal and only runs when required to cool the processor.This is to conserve the battrey.
Hope this helps other people
Best regards
Tony

seems toshiba laptops are not so good.

I have the same problem and I tried all the tip suggested on here and it still did not work. I mess around for a while and It power up and this is what i did. un plug all power , remove battery from laptop. hold down power button for few second. Plug the power cable in first, wait few second for green light come on, plug in the battery and wait for it to recognize the battery and start charging it, wait for few second then hit the power button to turn it on. That is what I did, your luck may vary. Good luck

i have toshibha satalite laptop. on cold time it will not turn on, when we are blow some air that time it will work, any one can help me to clar this please.

Toshiba Satellite P25-S: No lights. No nothing.
Yesterday it shut down cold in middle of work. No lights. No nothing. I unplugged and plugged back in but noticed that sometimes the power light would flicker for split second. Ultimately, nothing. I've not quite seen this question in my scan of this forum. If laptop is revivable, please provide suggestions.

I just had this problem with mine, although it's luckily okay now, unplugging the power supply and battery for 10 seconds worked for me as well!

I have a Toshiba Sattelite Pro 660, when I swith it on I had a black screen with only the Toshiba on screen. I couldn't start the Recovery Mode it frooze too. After checking in on the Boot Menue to change to boot from CD it came up with this error: Operating System not found. I've tried a well established Boot disc, but even that freezes before the Repair tool comes on. Any ideas?

My laptop couldn't power up meaning that the power butten wouldn't turn on , but when plunging the AC adapter the batterie is charging.

my laptop has these sypmtoms - after turning on while power jack is connected, the power led lights on and the charger indicator is on, yet the cpu fan is not working. after about 5 seconds, all leds are out except the charger connection indicator. please help, i have already checked the adapter/charger and its ok.