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What gives power to the Motherboard that isn't a power supply?

Discussion in 'Hardware' started by Xadavid, Jul 13, 2012.

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  1. Xadavid

    Xadavid Thread Starter

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    My PC suddenly shut off and wouldn't turn on, but the mouse and motherboard lights were still on. A tech took my PC and ran some tests. I assumed that either my Power supply or my Motherboard was unfunctional but he called me back telling me that it was neither, and that the problem was coming from "a part" that gave power to the motherboard. The replacement of this part would cost $80.

    Am I getting ripped off? What part could possibly cost $80 and isn't the Power supply?
     
  2. managed

    managed Trusted Advisor

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    Assuming it's a Desktop PC none that I know of.

    It's remotely possible if it's a Laptop though.

    I would ask the 'tech' exactly what part it is and what he would replace to fix it..
     
  3. Xadavid

    Xadavid Thread Starter

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    No, it's a desktop.
    It's very strange, I'll defiantly be talking to this tech tomorrow afternoon.
     
  4. ekim68

    ekim68

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    Power supplies will sometimes go all at once, or once in a while it will leave some of the voltages on that might keep the mouse light on...It could be the power switch which isn't exactly $80 dollars. It could also be the jumper on the Motherboard that allows the switch to turn it on...Check all of the cables and jumpers on the Motherboard and make sure they're tight. And try a different outlet....Could it be your monitor?
     
  5. Xadavid

    Xadavid Thread Starter

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    Thanks for the PSU tip, I didn't know that. I'm not is possession of my PC, the Tech has it right now. My monitor is working fine as well.
     
  6. ekim68

    ekim68

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    I'd be curious to see what repair was done on the invoice, if you care to share....(y)
     
  7. managed

    managed Trusted Advisor

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    $80 could be reasonable for a new PSU if that's what the tech meant.
     
  8. ekim68

    ekim68

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    I agree...(y) Just pointing out possibilities....;)
     
  9. managed

    managed Trusted Advisor

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    Same here. :)
     
  10. Xadavid

    Xadavid Thread Starter

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    No, he told me it was not the power supply.
    I'm very much curious to see what's wrong, I'll make sure to come back tomorrow with the results.
     
  11. dustyjay

    dustyjay

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    The only other part that provides any power to the motherboard on a desktop computer is the CMOS Battery. and if he is saying that is what it is, that is only a $3 part at Walmart. But the CMOS Battery wouldn't prevent the computer from powering on.
     
  12. ekim68

    ekim68

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    Good point dusty, but the CMOS battery can't light up the Mouse...
     
  13. dustyjay

    dustyjay

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    That is why I am thinking this tech is someone to avoid. He says it isn't the Power Supply and it isn't the motherboard (Motherboard test would require the system to operating t rule tht out) and a power supply tester is not that reliable a test. Sounds like he found a loose wire and wants to make the most he can out of it.
     
  14. dustyjay

    dustyjay

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    There are other parts that cold keep a system from starting yet leave lights lit, such as a bad HDD or Optical Drive.
     
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