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I just received my raspberry pi 4 and I've got a basic setup ready to go. However when I turn the Pi on nothing displays on screen. I've got a microSD with Raspberry Pi OS installed already.

Here's some info:

  • Green light blinks erratically, with no discernable pattern, occasionally stays on for some time, then eventually turns off
  • My portable monitor runs on Mini (not micro) HDMI
  • I've reformatted the microSD using a formatting software

I've also made a (rough) diagram of my setup below. My Setup (not to scale)

Would like to hear some possible solutions. thank you!

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  • Have you got a regular screen you can test with? I suspect the OS is not recognising your screen.
    – CoderMike
    Aug 1, 2023 at 16:19
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    Try turning the Pi on with no sd card, connected to that screen. Should see the diagnostics screen.
    – CoderMike
    Aug 1, 2023 at 16:49

1 Answer 1

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Please work through the boot sticky.

If it still doesn't work explain the varous results you had.

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