How can I clean install windows 11 from windows 10 without usb?

Here's a step-by-step guide on how to perform a clean, free and clean install Windows 11.

1. Step 1: Download the Windows 11 ISO
* Under “Download Windows 11 Disk Image (ISO)”, select Download.
* Choose your preferred language and click Confirm.
* Download the ISO file.

Step 2: Create a Bootable USB Drive (Using Windows Media Creation Tool)
You can use the official Media Creation Tool provided by Microsoft:
* Run the tool and accept the license terms.
* Select Create installation media (USB flash drive, DVD, or ISO file) for another PC and click Next.
* Choose your language, edition, and architecture, then click Next.
* Select USB flash drive and click Next.
* Insert your USB drive, select it from the list, and click Next.
* The tool will download Windows 11 and create a bootable USB drive.

Step 3: Boot from the USB Drive
* Insert the bootable USB into the PC where you want to install Windows 11.
* Restart the PC and enter BIOS/UEFI settings (usually by pressing F2, F12, DEL, or ESC during startup).
* Change the boot order to prioritize booting from the USB device.
* Save changes and restart; your PC should boot from the USB.

Step 4: Clean Install Windows 11
When the Windows Setup screen appears, select your language, time, and keyboard preferences, then click Next.
* Click Install now.
* Enter your product key if prompted, or select I don't have a product key to activate later.
* Choose Custom: Install Windows only (advanced).
* Select the partition where you want to install Windows 11 (usually the primary drive), delete existing partitions if you want a truly clean install, then select the unallocated space and click Next.
* Windows will begin installing. Follow on-screen prompts to complete setup, including creating user accounts and configuring preferences.