Question for the highly technical driver/hardware

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  • bjhawfam
    Senior Member
    • Dec 2014
    • 144
    • United States
    #1

    Question for the highly technical driver/hardware

    Hello,

    I was working on this board that had liquid damage. I was able to replace the mosfets (pq44) the caps (pc192, pc193, pc194, pc195, pc190) and the resistor pr222, NOW I have power to the board.. There was also damage to the LCD connector on the moterboard,, I was able to use solder and fix the issue.. Now, I'm able to load Windows and use the laptop without any issues, EXCEPT, WHEN I LOAD THE VIDEO DRIVER... Interestingly, the laptop will work with the intel driver loaded anywhere from 40 seconds up to several minutes until it completely freezes and it has to be manually shut down.. If I uninstall the driver I can use the laptop all day without fail..

    I originally thought it was solely a driver issue. I tried multiple drivers from the newest to older drivers and the result is the same (yes bios has been updated)..

    My question is, if it's hardware related what would be the signal change if any at the LCD connector on the motherboard? More specifically ,, would the installed driver vs no driver loaded have any effect on the LCD data lines that would be noticed at the LCD connector?
    Tags: None
    • raajkumar
      Badcaps Veteran
      • Mar 2015
      • 354
      • Srilanka
      #2
      Re: Question for the highly technical driver/hardware

      You should rework on vga chip.

        Comment

        • bjhawfam
          Senior Member
          • Dec 2014
          • 144
          • United States
          #3
          Re: Question for the highly technical driver/hardware

          There's no separate video chip on this version of the motherboard. Just the CPU with intel graphics and the chipset.. I did try a different CPU and the result is the same. The video works sometimes up to 6-10 minutes before freezing completely...

            Comment

            • piernov
              Super Moderator
              • Jan 2016
              • 4435
              • France
              #4
              Re: Question for the highly technical driver/hardware

              Maybe some stability issue on the VCCGFX rail. (if it's not Haswell/Broadwell but with a removable CPU it's probably not) You would have to monitor the voltage with an oscilloscope.
              OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                Comment

                • raajkumar
                  Badcaps Veteran
                  • Mar 2015
                  • 354
                  • Srilanka
                  #5
                  Re: Question for the highly technical driver/hardware

                  So problems may be on VCCGFX rail. Check the capacitors on that line. Also did you replaced the correct value of capacitors already.

                    Comment

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