Question about Toshiba Portege M400 PPM40U01000E Tablet PC

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My portege M400 wont start up. The led light is blinking orange in a steady even pattern. I have tried removing the battery but that doesnt change anything. The screen is blank, and the fan is loud.

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  • fannemel Jan 09, 2009

    Same tablet and same problem. Problem persists if power adapter is connected, with or without the battery in the computer. 


    The tablet responds to keyboard input by beeping intermittently, but nothing happens besides that. Motherboard or graphics issue? I will most likely ship mine to seller while it is still covered by warranty.

  • cedrob Feb 19, 2009

    The computer doesn't boot. Sometimes the powerled blikns in yellow, the other times it beeps, then blinks in green.
    I've tried with or without battery, connecting the laptop with an external screen and without harddisk with the same results.
    It sometimes starts, but not anymore...


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I have the M400 and it also does this. I don't know much about computers, but I found out when you apply a little pressure to the left of the touchpad and beneath the keyboard as you're flipping on the power slider, it boots up much more often. I know... sounds crazy and stupid, but it works for mine and it's been doing it for almost a whole year now. It doesn't work everytime, but whenever the light flashes and the fan cranks up to a million RPM i just pull the battery out

Posted on Jul 09, 2009

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Hi there,
I had this problem with my M200 and I had to replace the internal RTC battery. Not the easiest thing to do, but I found a visual guide on line (which I can't seem to find now). They are like $8 but hard to find.

Posted on Apr 13, 2009

  • Harry Smith Sep 23, 2013

    that is the easiest thing to replace on that laptop

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SOURCE: toshiba M400 tablet wont start

I think it might be the systemboard here.. but I strongly don't advise taking it apart yourself unless you know how because it can be tricky and you must be grounded

Posted on Sep 24, 2008

  • 2 Answers

SOURCE: toshiba M400 tablet wont start

I've had this problem intermittently on my Toshiba M400, and it recently became bad enough that it was failing to start on most attempts, and crashing soon afterwards if I moved it. Prodding the heatsink to change its position may have helped, but this could have been due to chance. It also had a habit of resetting itself when leaning on the left side of the keyboard when typing, but not when using an external keyboard. It's always had occasional crashes under high CPU load, causing the machine to freeze and the fan to go up to maximum. BIOS updates improved this initially, but in recent months it got worse again, especially when using Virtual PC unless hardware virtualisation was disabled.

I've just stripped down the laptop using the guide suggested by thiscomputer at http://www.irisvista.com/tech/laptops/Toshiba-Portege-M400/take-apart-tablet-pc-1.htm (good find!). Many parts are more fragile than in a desktop PC, but otherwise if you're used to taking stuff apart it shouldn't be that big a deal. You'll need a normal and small crosshead screwdriver (jeweller's screwdriver set works fine) and space to lay out the screws in a pattern so you remember where they go - consider making notes.

I fixed two things that could have been a problem: Firstly, a fair amount of dust was blown away with a hairdryer and vacuumed from the heatsink. Secondly, the pink thermal grease that couples the CPU to the copper heat pipe appeared to have all squeezed off the CPU die and had accumulated around the sides, possibly due to the small freedom of movement in the heatsink being repeatedly shaken. The grease was still soft so could be scooped back onto the die with a flat-bladed screwdriver. I also bent the legs of the Y-shaped CPU-to-heatsink retaining clip so that there was a greater downward force on the CPU. I figured this would improve thermal contact, especially if the clip had naturally bent and come loose over time. Removing the CPU itself didn't show any damage, but might have improved the electrical contact when reinserted. Be careful when screwing the Y-shaped retainer back in - because of the springy nature of the legs, if the screwdriver slips the screw will fly across the room and you'll have to hunt for it :-) The other thing to note when reassembling is that the wi-fi on-off switch engages with the lug on the motherboard, if this is wrong you won't be able to move the switch and the actual state will be the opposite of the switch position.

Finally, after I reassembled it still refused to start. I noticed the DVD drive wasn't properly flush with the case, and on removing the DVD drive it started. Close inspection of the drive and laptop connectors revealed a small metal tab had come loose, and the laptop continued to work with this tab removed and the drive reinserted properly. I removed and swapped some memory modules while experimenting with the DVD drive which also had some effect - it's possible that an ill-fitting DVD drive bends the memory above it and affects the contact. It's entirely possible that this was the only problem to begin with, and that playing with the CPU made no difference, so maybe check this first! But whatever it was, happily my m400 seems to be operational again.


Posted on Apr 11, 2009

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1 Answer

I have install win 7 on portege m400 , but pen not working! Please help me!


Go to the Toshiba Mobile support web site for you exact model. Select Drivers download. Select Windows 7 32bits or 64 bit and download the latest versions of all that relate to the Tablet module, and that includes the Wacom driver.

If you Windows is genuine you can uninstall all the Wacom drivers then execute the Check new hardware wizard ( of Hardware changes) or even Windows Update

Jul 06, 2011 | Toshiba Portege M400 PPM40U01000E Tablet...

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My Toshiba Portege M200 just stopped charging and wont even turn on? Is this the battery? Or what? The charger will be plugged in the wall and plugged in the laptop but nothing?


Try removing the battery and see if it will boot without it
Then check the caharger, charging light should be green and steady on the charger itself
If it is flickering, it meand power is not making a circuit, test charger jack with a DC volt multimeter with one probe to the outer side (earth) and one on the inner (positive). If this is ok, check the charging socket is not loose (if it is, will need replacing).

After that, suspect the power strip or charging / powerboard is dead on the motherboard

Mar 22, 2011 | Toshiba Portege M200 Tablet PC

3 Answers

My m400 wont start at all, just an orange light blinks at the power light


have you had any power surges lately?
Try taking the battery out of the laptop and starting just on power.
if this doesnt help then take battery and power and leave laptop for few hours then try again on only power or battery.

Let us know how it goes.

Jan 04, 2010 | Toshiba Portege M400 PPM40U01000E Tablet...

1 Answer

My Portege M400 will not turn on with the battery installed. It will work if you remove the battery and use the power supply. The power light only blinks yellow while the battery is installed. I have tried...


You look very much the unlucky owner of a busted battery.

I'm afraid the battery will have to be replaced. Meanwhile, do not use it with the power supply; not only it will do no good, as you already determined, but it might damage the power supply itself.

Jan 03, 2010 | Toshiba Portege M400 PPM40U01000E Tablet...

3 Answers

My toshiba portege M400 laptop will not start up, when I turn power on the power light starts blinking yellow and does nothing


This happened to me. The computer will not work with the battery in it.
Solution: Take battery out and plug in without battery... It should work,
You will need to get a new battery

Sep 19, 2009 | Toshiba Portege M400 PPM40U01000E Tablet...

4 Answers

Toshiba M400 tablet wont start


hello jpmca

try to take off your fan cable

here http://slashstar.com/blogs/alex/archive/2006/09/30/Toshiba-M400-Fan-Hack.aspx

and try to release the memory sodimm, release the battery and plugin the power cord again

if problem solve try to updated your bios for fan noise solution

here
http://support.toshiba-tro.de/kb0/TSB6A01KJ0000R01.htm

oke


cropp

Mar 15, 2008 | Toshiba Portege M400 PPM40U01000E Tablet...

2 Answers

No power


Any hope you may have left other than an expensive repair, is to remove the battery and leave the unit in an airing cupboard for a week and pray. Then replace the battery and try again. No change - then nothing lost. I know it's basic, and best done as soon as the damage was done, but has worked for me in similar circumstances. Don't be tempted to use a warm oven.

Jan 08, 2008 | Toshiba Portege M400-S5032X Tablet PC

1 Answer

Clock of the computer


This means that the cmos battery on the motherboard is flat and keeps losing time and date and probably the memory settings, this is only a small disc shaped watch type battery CR2032 and can be found on the motherboard, a pc repair shop would be able to do it for you for a small fee.

Jun 14, 2007 | Toshiba Portege M400 PPM40U01000E Tablet...

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