You do not install Windows 10 “from BIOS.” BIOS or UEFI firmware starts the computer and can boot Windows installation media; the Windows installer then performs the installation. In 2026, Windows 10 is also past standard support, so use Windows 11 for a new installation whenever the PC supports it.
Before Installing Windows From USB
Back up important files because a clean installation can erase the target drive. Make sure you know which disk contains your data, save any BitLocker recovery information, and confirm that you have a valid Windows license for the edition you intend to install.
How to Boot Windows Installation Media From BIOS/UEFI
Step 1: Create Official Installation Media
Use Microsoft’s installation-media tools on a working computer to create a bootable USB drive. Creating the media erases the selected USB, so copy its existing files elsewhere first.
Step 2: Connect the USB to the Target PC
Shut down the computer, connect the installation USB, and start the PC.
Step 3: Open the One-Time Boot Menu
Use the manufacturer’s boot-menu key during startup. The key varies by PC. A one-time boot menu is usually preferable to permanently changing the firmware boot order.
Step 4: Choose the UEFI USB Entry
On a modern PC, select the UEFI entry for the installation USB when available. Do not switch randomly between UEFI and legacy/CSM modes because changing firmware mode can affect whether existing installations boot.
Step 5: Start Windows Setup
After the USB boots, select the appropriate language and installation options and start Windows Setup.
Step 6: Choose the Correct Drive and Installation Type
If you intend a clean installation, carefully identify the destination disk and partitions. Deleting or formatting the wrong partition destroys data. Stop and back up the machine if you are not certain which drive is correct.
Step 7: Complete Setup and Install Updates
Allow the PC to restart as needed. When Windows reaches the desktop, run Windows Update and obtain any missing model-specific drivers from the PC or hardware manufacturer’s official support site.
Should You Install Windows 10 in 2026?
Standard Windows 10 support ended October 14, 2025. A Windows 10 PC can still operate, and some eligible systems may use Extended Security Updates, but Windows 11 is the normal choice for supported compatible hardware. Install Windows 10 only when you have a specific legacy need and understand its support status.
Frequently Asked Questions
Can BIOS install Windows by itself?
No. Firmware can boot the USB or other installation media. Windows Setup on that media performs the installation.
Do I need to change the permanent boot order?
Usually not. The one-time boot menu lets you start the installer without leaving USB first in the boot order.
What if the installer cannot see my SSD?
Do not start changing random BIOS storage settings. Check the PC manufacturer’s storage-controller and installation guidance for that exact model.
Summary
Use BIOS/UEFI only to boot official Windows installation media, then perform the installation in Windows Setup. Back up first, choose the destination drive carefully, preserve UEFI configuration, and prefer Windows 11 on compatible hardware in 2026.
Matt Jacobs has been working as an IT consultant for small businesses since receiving his Master’s degree in 2003. While he still does some consulting work, his primary focus now is on creating technology support content for SupportYourTech.com.
His work can be found on many websites and focuses on topics such as Microsoft Office, Apple devices, Android devices, Photoshop, and more.