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Thread: Toshiba Satellite C850 will not boot

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    Default Toshiba Satellite C850 will not boot

    My son owns the above laptop, turn it on and it boots to a blank white screen. Thats it, does nothing else.

    Removed 2 sticks of ram, tried both in different slots and independantly, no go. Removed and reseated hardrive (only because it was next to the ram ),

    No boot logo, cant boot to bios.

    Any ideas ?

    TIA



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    is it old or new?
    if you can find a manual, maybe theres a cmos reset
    or unplug the battery, if you can find it
    dont need a hdd to boot
    ram yes, but you tried that
    thats the free stuff
    otherwise its another dead lappy from bad solder joints or backlight i guess
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    Hi Phil

    I just did a Google and ended up back here....how fast are Google indexing these days !

    Umm......18 months old from memory. There is a small round silver battery under the ram panel. I might remove the HDD and RAm and see if I can get a beep out of it.

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    Removed ram and hard drive and pressed power on, black screen.

    Inserted hard drive only and powered on, black screen

    Inserted ram only and powered on, white screen

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    did you pull the battery out
    not the power battery, that little one
    leave it out overnight(drains the bios)
    put ram & hdd in, wont matter
    put batt back, important lol
    so the above says, only white screen on with ram (understandable)
    sounds motherboardish i hate to say
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    If it has a VGA port etc. You could try an external monitor to see if anything is actually happening. You get no audio indication, beeps etc?
    I'd rather have a bottle in front of me than a frontal lobotomy...

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    Quote Originally Posted by Philquad View Post
    did you pull the battery out
    not the power battery, that little one
    leave it out overnight(drains the bios)
    put ram & hdd in, wont matter
    put batt back, important lol
    so the above says, only white screen on with ram (understandable)
    sounds motherboardish i hate to say
    Yes, will pull the little battery today. I also unfortunately suspect the motherboard. I wouldn't buy another Toshiba, 2 exactly the same were bought at the same time and the other one has already been back under warranty once.

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    Quote Originally Posted by autotuner View Post
    If it has a VGA port etc. You could try an external monitor to see if anything is actually happening. You get no audio indication, beeps etc?
    I tried an external monitor last night, no go.

    My son mentioned that before it crapped itself, audio stopped working. Despite this, I would still expect error beeps.

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    i forgot this trick
    turn it on, wrap it in a towel for 30 mins (make it heat up)
    with power hooked up
    see if it displays then
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    Quote Originally Posted by admin View Post
    Yes, will pull the little battery today. I also unfortunately suspect the motherboard. I wouldn't buy another Toshiba, 2 exactly the same were bought at the same time and the other one has already been back under warranty once.
    Yep my neighbors got one 6 months out of warranty, DVD drive no longer burns, only reads. Crap eh.

    You can still salvage the HDD & data, that's a plus.
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    Already tried ?

    Might also be of interest:

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    if it doesnt post at all, i think its a bit over the copy\paste from forum software problems
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    If a manufacturer offers a TROUBLESHOOTING ASSISTANT or similar, personally always would use this first of all. My way to start solving given problems. Others may do differently.
    And I believe that only owners of a Toshiba Satellite C850 really can help in solving problem OP reported. A Toshiba Satellite XXX isn't same as a Toshiba Satellite YYY and also doesn't compare to any other laptop.

    Years ago, had a Toshiba Satellite, that overnight gave up its mind. No discernible reason. I haven't altered any hardware settings or installed any software recently that could cause this.
    The booting process stopped probably at some hardware initialization (blank screen). Tried everything myself, to bring it to run again. In vain. Brought it to the repair service. They said they can't do repair it by easy means. Would require a larger investigation. They told me that the laptop probably got overheaten. The projected repair-costs were huge. Too huge for me. So decided to put the Toshiba into E-waste. I have owned my Toshiba a little over 2 years.
    Last edited by jwoegerbauer; 12-07-14 at 09:47 PM.

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    Motherboard! consistent~common problem with Toshibas!

    Search for a replacement MB on ebay!

    But dont spend too much, you are only going to get the same (but temporarily working) MB!
    Last edited by cmangle; 13-07-14 at 01:11 AM.

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    No matter what OS you are using, Win8, Win7, WinXP, or Linux etc., if you have no boot screen, for that matter no display whatsoever, (especially when connected to an outside monitor via VGA port) then then problem is hardware and NO Troubleshooting assistant will help.

    It seems as though Toshiba had some VERY poor manufacturing processes going on, or a VERY bad engineering/design department! And whether you are talking about model XXX or YYY, when it comes down to AAA and BBB and CCC and DDD as well as XXX and YYY ALL having motherboard problems, you really need to suspect the manufacturer as a whole! (I counted 8 different models with motherboard problems on the first page alone of the link below)


    And the bitch of it is, the replacement motherboard you may find, is going to have the same design/manufacturing fault! It is cheaper from a manufacturing/profit-loss point if view to discontinue the line, than to repair/redesign the motherboard in question!

    IMHO
    Last edited by cmangle; 15-07-14 at 06:17 AM.

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    Well, some interesting progress.

    Despite nothing happening when I tried plugging it in to an external monitor, it now works on one. So obviously the screen is the issue.

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    Quote Originally Posted by admin View Post
    Well, some interesting progress.

    Despite nothing happening when I tried plugging it in to an external monitor, it now works on one. So obviously the screen is the issue.
    It's more likely the MB (video) being intermittent, not so much the screen itself.

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    put it in the oven
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    nah mtv, admin said it worked fine with an external monitor, cant be mb or graphics chip!

    admin leave c850 plugged in to ext monitor, cycle on off a few times and then leave it on overnight, disable screen timeout (screensaver) see if onboard graphics will over heat and fail. attached laptop screen change is not that big of a deal!

    I misunderstood you above and thought you said an external monitor did not work! You did in post #8. hmmmm

    philquad is that with a vegemite rub/baste or just straight up!
    Last edited by cmangle; 15-07-14 at 11:32 AM.

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    Quote Originally Posted by cmangle View Post
    nah mtv, admin said it worked fine with an external monitor, cant be mb or graphics chip!
    Why can't it be?

    admin first said it wouldn't work with an external monitor, but now it does, which appears to be an intermittent fault.

    If the MB and video chip were working normally, an external monitor should have worked previously.

    Quote Originally Posted by admin View Post
    I tried an external monitor last night, no go.
    Quote Originally Posted by admin View Post
    ... Despite nothing happening when I tried plugging it in to an external monitor, it now works on one.

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