Hi AnitaL,
Welcome to Computer Hope!
In order for someone to help you diagnose your problem, they are going to need as much information about it. Detailed is much better.
What operating system are you using?
For testing only, please try this:
Open your command prompt (Go to Start > Run > then type cmd > hit Enter)
Command prompt Window will appear. Type there: "ping
www.computerhope.com", then hit Enter. What is the result?