Repair guides and support for the Toshiba Satellite P850/P855 laptop series.

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Power button flashes but won't turn on.

The power button flashes five time when pushed, then nothing. Removed battery, unplugged left overnight and retried;same results. Worked fine two days ago.

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This link describes how to "decode" the light flashes from timed pulses to a hex format which will then indicate what the problem is and whether it is in the power adapter, the battery or the system board. Scroll down the page to the section headed by DC IN LED. Hopefully this will help you to isolate the problem.

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Mine did the same not long after I bought it second hand, it turned out the charger I got with it broke not long after. I found a spare toshiba charger in my Office with the same voltage and plug and it charged and booted up fine. The reason it was flashing was due to "low battery", which makes sense.

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skipboyd will be eternally grateful.
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