First, let me thank everyone here for the marvolous help you give. I have already successfully written two bios's but am having trouble with this one. I downloaded "HP_Pavilion_dv9730us_Entertainment_Notebook_PC_for_Notebooks_with_AMD_Processors_Microsoft_Windows-Vista-Based_HP-F.32_sp42853.exe-HP_-SLIC21_HP_SLP" for a DV9920US, which uses the F32 bios. The file given by HP is SP42853 so it seems to be the right bios. The problem is, the downloaded file has two bios bins, 30CFF32A_SLIC.WPH and 30CFF32B_SLIC.WPH, both are 1073K. The "original" bios downloaded from here is 30CFF32A.WPH and 30CFF32.WPH. But the write program looks for "bios.wph" which is 1073 bytes. Do I rename one of the 30CFF32X_SLIC.WPH files to bios.wph? If so, which one? Or is there something else? Help will be appreciated.