I was trying to clean a usb in disk part but accidentally cleaned my hard drive. For the past hour I have been trying to do fixes and now I am stuck at the screen "No bootable device - insert boot disk and press any key" Any help would be appreciated.
Use another Windows PC running W7 64 bit or newer and a 32 GB USB flash drive, and create a bootable USB recovery drive with the HP cloud recovery tool that will reinstall W10, the drivers and the software that originally came with your notebook.
Here is an info link for how to use that utility...
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