How to Perform a Clean Installation of Windows 7?

Once you have created a bootable USB drive, follow these steps to perform a clean installation:

1. Turn on your PC and let Windows start normally; insert the Windows 7 DVD or USB, then restart your PC.
2. Your device will boot from the Windows 7 USB device. Press any key when prompted with the message Press any key to boot from CD or DVD.

Note: If your PC starts Windows normally instead of booting from the USB, you may need to change the boot order in your PC's BIOS settings.
3. Restart your PC and when the manufacturer's logo appears, press the key for the BOOT menu, usually F2, F10, F11, F12, or Del, to open the menu.

4. Change the boot order to USB.
5. In the setup program, select your language, time, and currency format, and keyboard or input method, then click on Next.

6. Click on Install now to begin the installation process.

7. Accept the license terms and click on Next.

8. On the next screen, select Custom (advanced).

9. Select the drive where you want to install Windows 7. Click Next.
Note: To identify the correct hard drive, look at the Total size column and select the drive with the most space in GB.

10. Click Next and Windows will begin installing on your PC.

11. After several restarts, it's time to personalise your PC. Start by entering a name for your PC and click Next.

12. Set a password for your account. You can choose a memorable password or leave it blank and click Next.

13. Enter the product key and click Next.
Note: It's advisable to enter the product key now to ensure the correct edition of Windows 7 is installed, as skipping this step may result in a different edition being installed.

14. Enable the integrated Windows protection modes by clicking on Use recommended settings.

15. Set the time and date, then click on Next.

16. On the Network Settings page, choose the appropriate configuration for your needs or select a standard network setting. Click on Work network.

17. Wait a few minutes, and you will have Windows 7 fully installed.