How to install windows 7/8.1/10 using a USB flash drive

Links:
Windows 7 ISO:-

https://www.microsoft.com/en-us/softw...

or download the trial version without the need for a code here:

http://getintopc.com/softwares/operat...

windows 7 USB tool: 
http://wudt.codeplex.com/

Windows 8.1 tool:
https://www.microsoft.com/en-us/softw...

Windows 10 tool: 
https://www.microsoft.com/en-us/softw...