HELP HELP HELP BIOS

Bonjour,

jai un laptop hp compaq 6715b

problème avec un power-on password

j'ai tout esseyer

Unplug AC, take out the main battery.
2.) Take out /disconnect the RTC (real time clock) battery for app. half an hour (the period of 5 min as specified in the MSG normally is not long enough).
3.) Plug in the AC adapter (batteries still removed); computer should boot automatically, if not use the power button.
4.) The machine will boot and show the 162-error-msg "system options not set". U
5
5.) Shut down the computer and disconnect AC power again.
6.) Re-connect the RTC-battery.
7.) Install the battery pack(s).
8.) Restart the computer.

etc... etc...

j'aimerais savoir la bonne technique pour flasher mon bios

jai beau télécharger sur cd et sur clef usb se qu'il faut mais rien ne boot