1. Download Windows 10 full ISO 64 / 32 bit
Download Windows 10 ISO 64 bit
Download Windows 10 ISO 32 bit
2. Extract your downloaded file
3. Download rufus to create bootable USB
click to Download rufus 3.21
or click here for latest download from rufus site
4. Extract rufus and double click to install it
5. Insert your USB (8 GB or more space is required) and select the extracted windows 10 ISO file and then click start