The blinking light you have is a 4,1 error code. (4 amber, 1 white). This means that the computers battery is dead, and something is stopping it from charging. Can you confirm that the power cord you are using works? If so, the laptop's battery likely needs to be replaced.
I got this info from [link|https://www.dell.com/community/en/conversations/inspiron/4-amber-and-1-white-light-flashing/647f9a1ff4ccf8a8dedb294f|here|new_window=true]