Where or how do i could reset BIOS for hp Pavilion cs00xxxx

[B]I have tries do BIOS recovery use with USB for HP , then turn power off to put usb in then turn power on while hold flag window and B then look like failure and show code number for CMO Reset .. nothing happen cause of saying BIOS recovery file not found in your system. I haven't BIOS recovery back all day since day ago. Where or how do i could reset BIOS for hp Pavilion cs00xxxx[B]

Stupid question: did you follow the steps given here https://support.hp.com/lv-en/document/c02693833 to create the USB drive with a recovery BIOS on it? It's under "Create a USB recovery drive"

I presume that you did, although you don't say so.