This document pertains to all HP Notebook PCs.
If the BIOS on your notebook becomes corrupted, such as from a failed BIOS upgrade or damage from a virus, the computer will fail to boot into an operating system. The computer might display a BIOS APPLICATION ERROR 501 or simply stop at a black screen or beep. If you cannot enter the BIOS Setup Utility or System Recovery screens, and cannot start the computer from external storage devices, use this document to restore the BIOS.
Many HP notebook computers have an HP BIOS Restore tool that might be able to recover the BIOS from an earlier version and restore basic functionality. This tool might or might not work in the event of BIOS corruption depending on many factors, but is worth trying in the event the BIOS has become corrupted.