When Starting Our Computer it have 5 continuous beep sound problem. Why...? And How to troubleshoot...?

When Starting Computer it have 5 continuous beep sound problem. Why...? And How to troubleshoot...?

          * Just Change the CMOS Battery.
          * Then Switch on the PC.
          * After Switch on the PC Just Change the Date and Time.
          * Then Restart (or) Shut down your PC.
          * Now Switch on your PC.
          * I sure, Now no Problem.....

Computer makes 100 $ per day without online