Gaming Accessories

So, to make a long story short: My Reverb G2 stopped working.

I preordered it, and received the device with a two month delay in early December '20. After some minor fiddling during setup the Reverb worked beautifully. I disconnected the power at the outlet after that first trial run, and started using the Reverb G2 again around New Years', and sporadically since then.

Yesterday I used Blender and it's VR Inspection plugin. Worked fine. I quit the session and the WMR portal. A minute or two later I decided on taking another look at the model via the VR inspection. Blender claimed there was no headset present.

The Windows Mixed Reality portal claimed the same thing.  So I ran through the suggested and typical troubleshooting steps:

• Reseated all cable plugs - power, DisplayPort, USB and the HMD side plug.
• Rebooted the PC to see whether this would fix the issue. It didn't.
• Next, I completely disconnected the Reverb G2 from my PC and its power supply, rebooted the PC and then proceeded to plug everything in according to the steps outlined in the setup guide. That didn't work.
• I replugged the Reverb to different DisplayPorts and USB ports (USB 3.1, 3.2 and even a 3.2 USB-C extension card, and lastly on a powered USB 3.1 Hub I have), to no avail.
  The Reverb G2 is still listed as 'disconnected' in the Device Manager.
• Attempted some troubleshooting guides from communities across the world, notably one here by MYNY.
• Ran sfc /scannow to rule out corruption issues on Windows' part.
• Ran a stress test on the graphics card to rule out thermal problems there (not that I expected a problem there - otherwise the system would have likely crashed and burned and not simply, well... ignored the headset).
• I completely removed the device from the device manager, uninstalled and reinstalled related software. Checked Windows Update for any pending system updates for good measure in case this would help. Spoiler alert, and unsurprisingly for the genre savvy: nope, it didn't work.

Notably, the LED on the cable hub/power brick doesn't light up anymore which leads me to believe it is an issue with the power supply or the entire cable complex. I think I have ruled out software issues thoroughly enough to feel confident to say it's a hardware issue (though I'd be glad to be proven wrong).

System Information:

Intel Core i7 10700k (stock speed, not overclocked)

Gigabyte Z490 Aorus Elite AC Rev1

64 GB RAM
A Gainward 8GB GeForce GTX1070 with GameReady drivers 461.40 (yes. It's a bottleneck, but up until yesterday it worked the Reverb beautifully in half res.)

Windows 10 Professional 64bit, 20H2 update.

So, dear HP (and also the community), am I missing some super obvious troubleshooting step here? Or is it time to get in touch with the retailer I preordered the Reverb with for a RMA? Or even you directly (which will be challenging considering you're only offering phone support in my country - which I'm unable to use for a number of reasons).