I have a DELL Latitude E6430. It was working fine till Yesterday after which it unexpectedly shut down. The battery charging light on the cack of the laptop flashes alternatively between yellow and white while the battery says it is 100% charged. When it booted up it said something like

It did not give me any suggestions. I connected an Inspiron's charger but it did not work too. Can you please suggest a cheap way to fix this or exchange it for free

Thank you!

Regard 

apksprofree