PowerEdge 1750 warning alert

Hello to all,

This is my first time posting a message in Dell's Support site so I plead for your indulgence and go easy on me. I have a PowerEdge 1750 with a warning red light blinking, I just run a diagnostic scan but I don't know if that is sufficient enough to determine the cause of it. This is my first time using the Dell PowerEdge "Service & Diagnostic Utilities disk" as a diagnostic tool, if someone knows a better way to find why the warning is blinking, could you please reply to my cry of help???

Thanks in advance for your input,

Alex