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‎10-22-2022 10:53 AM

HP Recommended
Product: HP 4540s
Operating System: Microsoft Windows 10 (64-bit)

Used notebook without AC to full 0, than plugging in and booting system as usual, started getting "Manufacturing Program Mode Set x/10 " and "B AH" letters above, than rebooted 10 times with unplugging AC every time, it dissapeared but i still can`t boot automatically, bios says that "bootable device not found, turning off device", BUT i can F9 and select acpi-efi folder-bootx64.efi and boot into system, so it`s not hardware issue.
"B AH" letters are present after all

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