lenovo z570 black screen problem

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  • Anethra
    Senior Member
    • Dec 2018
    • 70
    • Turkey

    #1

    lenovo z570 black screen problem

    the notebook didn't turn on when it first arrived. whenever I plug it into the adapter, the adapter was short circuited. after I checked the CPU Power Unit and saw the IRF6721(PU4313). was burnt. i changed it. after the shord circuid gone there was no display on the screen. i check again. and i see warming up cpu controller NCP6131(PU4201). now the PC works normal but there is a problem with display. When I try to restart from OS, it stucks on black screen, nothing happens, nothing shows up. It opens fine when I close and reopen normally. But when I install the Intel Graphics Driver in Windows, it stucks on black screen on windows startup. I tried to install Windows 7 and 10. Same problem. Any Ideas?
  • Anethra
    Senior Member
    • Dec 2018
    • 70
    • Turkey

    #2
    Re: lenovo z570 black screen problem

    schematic here
    Attached Files

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    • piernov
      Super Moderator
      • Jan 2016
      • 4435
      • France

      #3
      Re: lenovo z570 black screen problem

      Did you try another CPU?
      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

      Comment

      • Anethra
        Senior Member
        • Dec 2018
        • 70
        • Turkey

        #4
        Re: lenovo z570 black screen problem

        yes, i did. on laptop have i7-2610q. i did try with i5-3210 and same problem

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        • Anethra
          Senior Member
          • Dec 2018
          • 70
          • Turkey

          #5
          Re: lenovo z570 black screen problem

          i changed pch. still same problem

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