How can we remove the the virus "Lord Rahul cool " 
                            (JOMBINO ANSWER)
OK
Click Start
Run
Then type Msconfig
click on start up
then untick the box that show Lord Rahul cool from start up items
then apply and restart
ok

Second step1.
Click on Any folder.
2. Click Tools - Folder Options - View - Hidden Files & Folders
3. Mark Show hidden files and folders
4. Unmark Hide extensions of Known file types
5. Unmark Hide protected Operating system files (Recommended)
6. First two files will be seen on hdd drive : Rahulísvirusprotection.vbe & autorun.inf
7. Click on the properties of both file and unmarked Read only.
8. Clicked Apply & deleted both files.
9. Searched for Rahul*.* on hard drives.
10. Click on the properties file and unmarked Read only deleted the file.
11. Now LORD RAHUL COOL is out of my browser

ok
Third step and most easy is to use malwarebyte.