sometimes it take so much time to burn iso files into usb drive or you forget your usb drive i will show you how to download windows without usb
with very easy steps
First
You need to download windows iso and extract windows files to any folder
you can use any app to unzip iso like 7Zip or Winrar
after that follow this steps
-
press windows icon and search for change advanced startup options
or hold shift + restart -
press on Restart now
-
it will open the boot menu press on Troubleshoot
-
you will open Advanced Options press on Command Prompt
-
if you set password for pc type it and if you don’t set password skip or press continue
- you will find cmd opened type notepad.exe
- press File > Open or ctrl + o
- make sure to select All Files not txt only
- search for your windows files and open setup.exe as administrator
and install windows as normal
Now you can install windows
!!! Sudden power outage can result in download failure or data loss !!!
!!! if you stuck in boot menu and can’t open anything press shift +F10 to open cmd !!!
Enjoy 
