Having problems with your Toshiba Satellite M55-S141 Notebook ?

Toshiba M55-S139 Laptop randomly freezes without warning.

\015 Symptoms:\015\012- Machine ramdomly freezes while running or while booting. Usually a few minutes after boot.\015\012- When the machine freezes, the screen remains frozen (does not go black), the mouse activity is frozen, the computer is still powered on.\015\012- Pressing the on/off butter triggers an instantaneous reboot.\015\012- Having the exact same symptoms on a Satellite M40 (PSM40U-11U048)\015\012- The freeze happens suddenly, without warning or visible artifacts on screen. \015\012- While running XP, I would get the mouse freeze and a single beep at the same time.\015\012- As soon as the machine freezes, the HDD becomes idle.\015\012\015\012Details:\015\012- Not OS related. Happens with XP and Unbuntu.\015\012- Not memory related. Changed the memory banks with new ones. symptoms persist.\015\012- Not HDD related either. \015\012- Does not appear to be CPU related. Temperature seems normal. No apparent overheating.\015\012- Tried reseting the bios settings to default with no effect.\015\012\015\012I suspect a problem with the motherboard, possibly a false contact somewhere on the board, possibly something related to the chipset. \015\012\015\012Any idea what is going on? Having 2 toshiba laptops with the same problem, I would assume this issue is widespread. Any idea how I could narrow the issue would be helpful too. Finaly in the event I need to replace the motherboard, do you know where I could order one?\015\012\015\012Thanks,\015\012\015\012David.\015\012--\015\012\015

Answers :

Ok this may be a multistep process to verify for sure that the board is bad before we replace it then I will help you find one, just bear with me. Usually freezing does have to do with overheating, but as you said, you checked that. Do you mind telling me what you are using to monitor the temps, just curious.

I have to sart asking the basics then we can look into the hardware. Have you done a disk cleanup? disk defrag? check disk utility? have you run any security software? which one? in safe mode? If yes to these, we should move on to the hardware, let me know.
Yes its most likely the motherboard. Try with battery and without, also try with battery alone. see if the problem happens with or without battery and with or without charger.


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