HP ENVY x360 m6 -w103dx bios corrupted?

[DROSSTODAN]

I have 2 identical HP ENVY x360 m6 -w103dx.  I got a black screen on one of them after Windows update, could not boot, no video, no beeps, the only visible action is Caps Lock key flashing slow slow quick quick. Tried triple shutdown, then all steps above to boot into BIOS, downloaded and tried BIOS recovery from USB using oldest version F.10 and again with newest version F.35 loaded onto USB drive, with and without HDD connected, nothing works.  I know the bus is seeing the USB because the USB drive has an LED that flashes briefly when first powering up.  Ideas?

[Echo_Lake]

@DROSSTODAN

Thank you for posting on the HP Support Community.

I understand you are in need of support, As you've performed relevant troubleshooting steps and the issue persists. I would request you to contact our Support and our Support Engineers should be able to check the available service options for your computer.

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• Select the product type.
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