Please see HP Notebook PCs - Restoring the BIOS, which states you may be able to create a "USB key with an HP_TOOLS volume" to flash the BIOS. Please see http://h30434.www3.hp.com/t5/Other-Notebook-PC-Questions/How-to-use-the-HP-BIOS-update-uefi-utility/... for detailed step-by-step instructions that can be used to create the "USB key with an HP_TOOLS volume". You may be able to skip "Step 4". Please see the HP ENVY 17-j006ea Notebook PC Drivers page for the proper downloads needed for this procedure.
HP Notebook System BIOS Update (Intel Processors)
HP Unified Extensible Firmware Interface (UEFI) Support Environment
If you have any further questions, please don't hesitate to ask.
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