First Download 3 Softwares :-
1. Download Port Scanner
2. Download rDOS
3. Download Ip Hiding tool
Follow these steps:
1: First of all you need to know the IP address of the website you
want to crash. Use ping command in windows to get the ip address of
the website.
open CMD and enter ping "www.website.com" see the snap Now
you have the IP address of the website.
2: Now use Port scanner to
check whether PORT 80 is open or not. If PORT 80 is not open choose another website to hack 
otherwise you can’t crash this website.
otherwise you can’t crash this website.
3: Now open your rDos. Enter
your victims ip that you got from step 1.It will ask you for the port to attack use port 80 that’s why we
scanned to make sure that 80 was open! If it is closed it will not work.
