Does anyone know where to find a guide to the LED flashing codes for an Inspiron 11 3153? On the Dell support website it appears different machines have different meanings to the flashing LED codes. Mine is flashing 2 amber then 7 white. Preboot diagnostics passed clean, as did website hosted diagnostics.
Just remove the back cover and disconnect the battery cable (you don't need to remove the battery). If the flashing ceases, you'll know you need a new battery. If it doesn't, it's more likely a bad mainboard.