Hi everyone,

my laptop is a Latitude E5430 and it has started giving me some trouble.
It started rarely but now more and more frequently: the PC suddenly turns off without the OS warning me in any way.
This happens only when the power supply is connected to the PC (when the PC uses the battery it works normally).

I ran all the diagnostic tests and verified that:
* the CPU temperature is under control (it is stable around 70 degrees);
* the fans work correctly;
* RAM have passed all diagnostic tests;
* the battery has a 73% health;
* all other test passed.

What could be the problem?
How can I solve?
thank you very much for your support