If you have a bunch of files or folders with different unrelated or random names and if you’d like to name them in serial order, here is a simple way to do so natively in Windows 10/8/7, without using any third-party software.
Rename files and folders in serial order
Arrange all the files or folders you’d like to rename serially, one next to the other.
Select them all.
Right-click the first one and select Rename.
The file or folder name will get high-lighted.
Rename it to whatever you want it to be, say Voila.
All the files or folders will get renamed serially instantly.
More Windows quick tips here.