You place a file you _may_ be able to get from support (called SMC.bin) onto a FAT32 USB drive, and then: 1. Power off. 2. Hold the Windows, Up arrow and Down

You place a file you _may_ be able to get from support (called SMC.bin) onto a FAT32 USB drive, and then: 1. Power off. 2. Hold the Windows, Up arrow and Down arrow keys all at the same time. Only then hit the power button to start. 3. Release all buttons and press F10. 4. You should see something about "SMC Command" starting. 5. Press File, press "Reset BIOS security defaults" or similar. The only way to get the SMC.bin file, that I know of, is directly from HP Business Support.