Could you come and help me mend the computer, Neel?
What's wrong with it?
I can't log on the internet again.
Let me see. Did you change anything on your computer?
What kind of anti-virus software do you use?
I don't have this kind of software.
Are you kiding? You have to install an anti-virus software on your computer. If not, you will be attacked by viruses, and it can lead your computer into failure.