Computer powers on but not Booting. Motherboard Dead?

I am Fixing a Prebuilt Toshiba Satellite A135-S2246 and I can't diagnose the problem with it.

The computer will power on and the fans will all Spin but there is no BIOS screen, Start-up Screen, or video output what so ever. At first I thought it was either the Laptops bulb or LCD Inverter and ended up replacing them both but that was not the problem. Then I noticed the HDD Access light was not on and the keyboard wouldn't function. I tried to check the Motherboard by taking out both sticks of memory and trying to listen for a continuous beeping sound but that is not there either. No sounds upon booting at all. I haven't tried anything else yet, but I can sure use some suggestions as to the problem and diagnosing techniques. Help will be appreciated and I could try to perform any suggested actions and give you specifications if you would like. Thank you.
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  1. I doubt it's a repairable thing at this point.
    - Make sure you are not clogged up with dust and that the CPU fan spins.
    - See if booting without a battery will work.
    - Follow manufacturers instructions for resetting the BIOS, although that is likely not going to do anything because you never get a POST screen at all.
    - See if you post with the HDD disconnected.
    Other than that, there are many sub-$500 laptops with far more going for them.
  2. "...fans will all Spin but there is no BIOS screen, Start-up Screen, or video output what so ever. ..."

    Did you try external monitor ?
  3. tsnor said:
    "...fans will all Spin but there is no BIOS screen, Start-up Screen, or video output what so ever. ..."

    Did you try external monitor ?



    That is one of the First things I tried, Just forgot to mention it...
  4. Proximon said:
    I doubt it's a repairable thing at this point.
    - Make sure you are not clogged up with dust and that the CPU fan spins.
    - See if booting without a battery will work.
    - Follow manufacturers instructions for resetting the BIOS, although that is likely not going to do anything because you never get a POST screen at all.
    - See if you post with the HDD disconnected.
    Other than that, there are many sub-$500 laptops with far more going for them.


    At this point It probably isn't worth it.... I am pretty sure it Is a complete Motherboard failure.... I'll just give them the information off their hard drive and tell them to cut their losses.... They can definitely put the $300 that would go to replacing this board to a new computer... Thank you.
  5. If you are comfortable swapping lcds or MBs, getting a parts chassis like this one "Toshiba Satellite A135-S2246 Laptop/Notebook cracked screen, for parts/repair" and merging it with your current system might give you a working system for $80 plus a few parts to keep on reserve like a keyboard. http://www.ebay.com/itm/Toshiba-Satellite-A135-S2246-Laptop-Notebook-cracked-screen-parts-repair-/290637220697 (I didn't read the EBAY post, just picked one at random so it could be bad or overpriced, but you get the concept.)
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