Dell laptop shutting down

Hi, It's been three years since I about my laptop (Inspiron 14 5000 2 in 1) and recently it shutts down without any reason (I was using it with the charger on, I was also not doing any heavy work, just listening to music.) Or sometimes when I restart it, it says that restarting failed and asks me to restart it again. Additionally its been two days that when i plug in the charger the power button (the wite light which turns orange when the battery is lower) blinks once and then it turns off.

Note: I have changed the fan of the laptop on the first year of use because it stopped working

(forgive me for any grammar mistakes)