Generally, when setting up a board for the first time:
1) Enter BIOS
2) Select "Load optimized defaults".
3) Set up Date and Time.
4) Set up IDE or AHCI for the primary chipset SATA controller.
5) Select Boot Device order. Generally, you want to put the optical before the HDD.
6) Save and Exit.
That's mostly all you should have to do. Everything else is mostly automatic.
There are a few other issues - if you are attempting to install Win7, you may have to enable CSM boot mode, and if you are doing so on a Skylake platform, you need to enable PS/2 Port 60/64 emulation for the USB controller.
Then you put your OS install disc (not the driver disc that came with the mobo) in, and boot your system again. It should boot off the disc, and then follow the setup instructions. With a Windows OS, I always select "Custom", and manually create the partitions for the OS. It's easy though.
Then the OS setup routine will start, and then it will reboot. When it reboots, remove the DVD or USB stick, and let it boot off of the HDD to finish up with Setup.
Once in the OS, and it has finished installing, then you need to install the Drivers.
To do that, you need to either download them, ahead of time, or with another PC, onto a USB stick, from the motherboard and video card / sound card mfg's web site.
Or you can pop in the CD/DVD that came with the motherboard, that should have drivers.
Be careful, though. If you select auto-install (or just let the mobo driver disc AutoRun), then you may end up with a bunch of useless mobo utilities and also some crapware, besides just the drivers. It's always much safer, and more up-to-date, to get them from a mobo mfg's web site.
PS. Some mobo's, like my ASRock AM1 ITX board, have internet support in their UEFI (BIOS), and can update the mobo's BIOS code, only with just an ethernet connection. This is a handy feature.
PPS. With Windows 7 (and newer Windows OSes???), you should only have the OS disk installed and connected. Leave your data disk(s) disconnected, at least their data cables. This prevents the Win7 installer from putting the bootloader info on the wrong drive, which it is prone to do.