I recently rebuilt my system with the ASRock Z77 Extreme 4, i5-3570 CPU, Western Digital Blue HDD (1TB) and the full version (not OEM) of Windows 7 Home Premium 64-bit. I let Windows do its thing during the installation, then installed the drivers on the ASRock CD (as well as some not on the CD). Everything works fine.
I didn't go into BIOS and do anything there. And I didn't set up the UEFI interface because I had no idea what that was (though I do now). My question is, should I use the ASRock installation CD to set up the UEFI interface now, or is that something that is only supposed to be done before installing the OS?