Surface Pro 7 - stuck on black screen, no USB power

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  • Prott
    Senior Member
    • May 2022
    • 154
    • Czechia
    #1

    Surface Pro 7 - stuck on black screen, no USB power

    Hello fellow badcappers!

    I have a question regarding startup sequence of Surface Pro 7 (but possibly it's similar to lot of newer laptops).

    The Surface 7 starts, all rails are present (the powerup sequence is done), CPU starts to heat up and I can hear activity (varying coil whine), but it never goes furter. No picture, no response to keyboard and I can't even get any power to USB ports.

    Can a bad memory cause this behaviour (CPU warming up but not enabling power to the USB ports) or is the CPU a goner? Or is there another possible culprit?

    I doublechecked and the BIOS should be fine (it's working on another S7 Pro).

    Thank you!
    Tags: None
    • Prott
      Senior Member
      • May 2022
      • 154
      • Czechia
      #2
      For anybody wondering - it was a faulty ram module (resistance under 6 ohms on the rail).

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