I built my computer two years ago and installed Windows 7 Home Premium 32 bit edirion.
After putting everything together I double-checked that all the cabling was correct.
Before that I read the motherboard manual three times. Because it explained where the cables are connected and the BIOS settings
.I copied the product key (25 digit key on the sticker for the DVD) in big letters on a piece of paper to have it handy.
Finally I booted the computer (with the side cover removed) and observed than all the fans were operating. The monitor said something to the effect "no operating system is loaded".
I rebooted into BIOS and checked that all the RAM was listed and the optical drive and hard drive was detected and it showed the correct size.
Per the BIOS manual I had to make sure the "Run SATA as IDE" was enabled (it was by default).
I set the boot order so that the optical drive was at the top (first device to check). Next in line is the hard drive.
After inserting the Win 7 system disk I shut down the computer, waited a minute or so then restarted.
The computer booted and found the Win 7 disk in the optical drive and began installing Win 7.
During the install you will need to answer some questions about, keyboard, language, time zone, username, password, etc.
Later you are asked to enter the product key and Win 7 will ask if you wish to configure your internet connection. That is optional at this point but now is as good a time as any.
Probably Win 7 will need to reboot and once it starts up again the O/S is ready.
There will be a lot of Microsoft updates so allow enough time for this. there may be 60-80 updates.
You should make sure the firewall is enabled and you will need an antivirus application before surfing the web or checking e-mail.
Note: Win 7 has no e-mail client you need to log into Windows Live ( you can use a hotmail account to log in or make a new account. Once logged in you need to download Windows Security Essentials and Windows Live Mail. You also can download some other (free) apps from there if desired.
You can also use Dream Mail, Incredimail, Thunderbird or other e-mail clients if you want and you can use any other antivirus app if you wopuld rather not join Windows Live.
Reading the motherboard manual first was a big help during setup.
The default BIOS settings for the motherboard were fine "out of the box"
Writing down the product key was a help for me. Big letters were easy to read and you do not want to enter the wrong key.
The "Run SATA as IDE" setting seemed strange to me but that was what worked for the C Drive to work.
Hope this helps. Good luck with your build,