USB thumb drive while holding Logo + B or Logo + V and holding power button UEFI image file on USB thumb drive (USB thumb never even lights up) Logo + V while doing the same thing with the power button Logo(key) + B while holding power button for three seconds to turn on computer In my attempts at recovery, the following has failed:
There is no HDD activity, and keyboard num & caps locks don't respond however, about five seconds after power-on, the power button can shut the computer off with a brief press rather than a four-second hold. Now that is all it does when I try to turn the computer on: a black screen. It appeared to have succeeded but when it restarted, it only gave a black screen. I was updating the UEFI on my HP Pavilion 23-g010 all-in-one desktop computer.
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