MSI CX720 - Black Screen, CPU slowly running hot...crisis recovery ?

Discussion in 'PC Hardware' started by itsmemario1, Nov 19, 2020.

  1. itsmemario1

    itsmemario1 MDL Addicted

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    #1 itsmemario1, Nov 19, 2020
    Last edited: Nov 25, 2020
    Its a laptop btw.

    There is a separate GPU located next to the "i3-350" socket...soldered...

    I already removed battery, BIOS battery, both RAM slots and did the 30 second power button thingy.

    Screen stays black, fans start up, HDD only ticks once, the sleep LED (half moon) is lid on turning the laptop on.
    Cant find much about this.

    External monitor also has no signal.

    CPU slowly gets hot. Probably the board and or gfx card.

    I stumbled across people that removed damaged flex cables (for example USB), to easily revive their MSI laptop.

    This didnt help here.

    Starting it without RAM it at least shuts down after some seconds.

    Is ther maybe a desaster / crisis recovery for this laptop ?
     
  2. coleoptere2007

    coleoptere2007 MDL Guru

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    #2 coleoptere2007, Nov 20, 2020
  3. Hadron-Curious

    Hadron-Curious MDL Guru

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    #3 Hadron-Curious, Nov 23, 2020
    Possibly the Graphics Processing Unit has gone bad.
     
  4. NoTears

    NoTears MDL Member

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    #4 NoTears, Nov 23, 2020
    Did you test both rams one by one ? maybe one of them is dead but since there is black screen even when connecting an external monitor evrything suggests that the problem is related to the graphic card which is probably dead.
    Fortunately it's a physical graphic card and not integrated one so it can be replaced easily if it turns out that it is 100% GC issue. If it was an integrated, that would have been another story.
     
  5. itsmemario1

    itsmemario1 MDL Addicted

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    #5 itsmemario1, Nov 23, 2020
    Last edited: Nov 23, 2020
    (OP)
  6. NoTears

    NoTears MDL Member

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    #6 NoTears, Nov 24, 2020
  7. itsmemario1

    itsmemario1 MDL Addicted

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    #7 itsmemario1, Nov 25, 2020 (OP)
    I should have mentioned it is a laptop in the beginning (fixed that in post 1)
    It does not BEEP. There is no POST. Screen stays black (even on external monitor)

    Im aware some laptops DONT show POST on external monitor.

    It detects the USB thumb drive (blinking shortly) but doesnt do anyhthing else after that.

    Board and capacitors look clean.

    I will order the CPU for a last test. Because there is nothing left to test.

    Thanks for the link.
     
  8. itsmemario1

    itsmemario1 MDL Addicted

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    #8 itsmemario1, Nov 27, 2020 (OP)
    The "new" CPU has arrived.

    Sadly its also gets hot after some minutes and the screens (internal and external) show nothing.

    No POST, no BEEP, no HDD sounds. So either GPU or the Board. :/
     
  9. NoTears

    NoTears MDL Member

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    #9 NoTears, Nov 27, 2020
    Last edited: Nov 27, 2020
    Sorry to hear that.
    yes, there are only these 2 hypotheses left in my opinion. I will go for the motherboard as the major cause of motherborad failure is overheating.