I have an old laptop with no OS. I would like to boot it with a Windows USB stick, but the F12 key is only available for "boot from LAN". It is the BIOS version F. 16. Yesterday I somehow managed to open the windows installation program. Now it doesn't work anymore.
What kind of laptop do you have?
HP Pavilion dv9000
Should actually work with the F10 key, so give it a try?