The L LED is Constantly blinking!!!!

The L LED is Constantly blinking whenever i connect my arduino..... Please help me to solve my problem!!!!!!!!

What sketch did you upload last?

Try uploading File->Examples->01.Basics->BareMinimum to fix the problem.

A fair number of Arduino clones come with blink pre-loaded.

The bootloader will also blink the LED if you have nothing other than the bootloader on it, as might be the case on a new board.

Thus, the LED blinking, in the absence of other issues, is not indicative of a fault condition.