The wireless issue might be due to the Imager problem referred to.
Whatever I do neither they are connecting to my Wifi modem (which runs on 2.4 Ghz band) nor they give any signal to the HDMI screens I tried.
Also when I plug the micro USB to the USB port, I can't see anything in the Device Manager.
The HDMI issue might be due to an HDMI screen that is incompatible with the default video settings in RasPiOS. (Although in that situation I would still expect your to see early boot-up messages.) Or it might be due to a faulty, or not connected, HDMI adaptor or cable.
The 'usb-only' test (no power, no microSD) on my Pi Zero 2 WH causes dmesg on my RasPiOS workstation to emit -
Code:
[150913.922461] usb 1-1: new high-speed USB device number 2 using xhci-hcd[150918.978473] usb 1-1: device descriptor read/64, error -71[150919.223768] usb 1-1: config index 0 descriptor too short (expected 55, got 32)[150919.225264] usb 1-1: New USB device found, idVendor=0a5c, idProduct=2764, bcdDevice= 0.00[150919.225268] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0[150919.225270] usb 1-1: Product: BCM2710 Boot[150919.225272] usb 1-1: Manufacturer: Broadcomdavid@cm58lbw64dt:~ $ Statistics: Posted by B.Goode — Fri Jul 11, 2025 11:16 am