i have an HP All-in-One 23-Q103nv machine which came with Windows 10. I'm trying to downgrade to Windows 7 but i don't have either keyboard nor mouse during the Setup. Of course, there is no PS/2 port on this machine -- just USB. Keyboard works in BIOS, but not during the Windows setup. Please note that i used USB 2.0 port, not 3.0; and there is NO OPTION in BIOS to set USB functioning whatsoever. This machine is a pain in the ass...Any help?