HP Compaq Presario C306US Notebook "c306" Questions

I have a Compaq Presario c306 us. I wiped the HD and am installing XP Professional on it. However, during the setup it reports that there is no HD, and it goes no further. I've wiped and reloaded ...

...using the HP function keys? Fn +F7 or Fn+F8 should adjust the brightness of the screen for that C306 model laptop. If adjusting the brightness has no response then try the next steps.What happens ...

No video on Compaq presario C306 I can barely see screen , if I use a flash light. Have replaced the inverter and the backlight. Still the same problem. Any help?? When the backlight is black ie. the ...