Hi Welcome to Just Answer.
I am sorry for the delays. I will be happy to work with you to get the problem resolved. During this process, I might ask you a number of question to best understand your problem.
1. What is the model of the system?
2. How long have you owned this?
3. When was the last time the system worked?
4. Would walk me through the symptoms what are you experiencing when trying to use the system?