So you’ve carefully picked out some parts and built a computer, but it doesn’t really do anything…yet. Before we hop into installing your operating system, we need to take a quick look at the BIOS and prepare it for our operating system.
BIOS stands for “Basic Input-Output System.” It’s a tiny program that’s stored on a small memory chip in your motherboard, and it runs on your computer before the operating system does, setting everything up and allowing you to change basic settings. It’s what allows you to install a new operating system, overwrite an old one, or do more technical stuff like overclock your processor.
(Technically, most new motherboards including ours are loaded with a more advanced kind of pre-boot environment called a Unified Extensible Firmware Interface, or UEFI. It has a ton of new and useful features to better support modern hardware. But everyone still calls it “the BIOS,” because it covers all of the same bases.)
Getting Into the BIOS
If you don’t have an operating system installed on your storage drive, the UEFI/BIOS program should start immediately when you turn your computer on. If it doesn’t, take a look at the splash screen (the one with your motherboard’s logo or text): it will have directions on how to start it.
Usually you do this by quickly pressing F1, F2, F11, F12, Delete, or some other secondary key on your keyboard as it boots. (On our Gigabyte keyboard, the command is “Delete,” in the lower-left portion of the screen above.) If you don’t get it on the first try, just turn the computer off and give it another go.
Once you’re in, there are a few things you may want to do.
Update Your BIOS or UEFI (Optional)
Chances are, your motherboard is not running the latest version of its UEFI. Updating it helps to support new features, patch bugs and security vulnerabilities, and generally give the place a bit of spit-and-polish. Because the UEFI runs before the full operating system, it doesn’t have a way to update itself over the Internet, and you’ll need to do it manually.
Note that you don’t generally need the latest version of the motherboard firmware, unless you run into specific compatibility problems with newer hardware and features. For example, if you have a last-generation motherboard and a current-generation CPU that happens to use the same socket, you may need to update it for the CPU to work properly. Updating is also sometimes recommended for specific, critical security updates or bugs.
You can check for the latest version of your UEFI/BIOS by putting the model number into Google and adding “BIOS update.” (Check the box or one of the UEFI menus if you don’t know your motherboard model.) On your manufacturer’s product page you’ll find a list of updates, usually under “Support.” Download the latest one if your UEFI isn’t already running it.
Again, for each manufacturer this process is a little different, but more or less all of them should have some means of updating the UEFI program without an operating system installed. In the case of our Gigabyte motherboard, the process went something like this:
- Download the updated UEFI file from the Gigabyte website (on another, working computer, of course).
- Transfer the file to a USB drive.
- Plug the drive into the new computer, start up UEFI, and press F8.
- Follow the on-screen instructions to install the latest version of UEFI.
- Reboot.
Your motherboard and BIOS/UEFI will follow the same general steps, but not necessarily exactly. You can usually find the process with a quick Google search. If for some reason you can’t get it working, don’t worry: motherboard manufacturers also frequently offer programs that can update the BIOS/UEFI once you get Windows up and running, too.
Check Your Storage Drives
Next, check to make sure that your motherboard can recognize your storage drive. If it can’t, the Windows setup utility you use in the next article won’t have anything to install to.
The instructions here are unfortunately going to be a bit vague, because every company’s UEFI program is laid out differently. All we’re really trying to do is find the page that manages the storage drives. On our Gigabyte motherboard, this is found under the “BIOS” tab (because the new UEFI includes all of the old “BIOS” settings, you see).
I’ve selected “Boot Option #1,” the first thing that the BIOS will attempt to boot. If this fails, it will continue to the second option. Under the available list, you can see the Corsair solid state drive we installed in the last article. If you’re installing your operating system with a DVD drive, make sure you can see it here too. (Sometimes both are labelled “SATA” for their motherboard connections.)
If you don’t see your drive or drives, double-check the power and SATA data cables in your case. If you’ve verified that they’re connected and you still can’t see the drives in BIOS, you may have to replace them.
Going Further with Other Tweaks
There’s a lot of other interesting stuff you can do with your computer’s UEFI or BIOS, but none of it is really necessary to get an operating system up and running. Feel free to poke around at some of the options; most of it is self-explanatory, like powering up the computer when the mouse or keyboard is touched. If you don’t understand what something controls, don’t touch it without doing a Google search first.
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