Compilation Error - Yellow LED blinking as I have installed & connected Arduino UNO board to Windows XP PC
The yellow LED may be flashing because there may be a "Blink" LED program pre-installed on the Arduino.

To diagnose the "Error compiling for board Arduino Uno", we need to see the sketch you are trying to upload, and detailed error messages. If you go to Arduino &gt; Preferences, check the "compilation" and "upload" checkboxes beside Show verbose output during:. Display line numbers is another checkbox you could enable.