Computer won't turn on

Hello

Take a look at the steps needed to find a short circuit with a multimeter

Check inside the charging port for any obvious unsafe conditions,

such as short circuit betwen positive and negative connector.

You have to touch the black probe multimeter to the negative and the red probe to the positive chargir port.

if you are seeing a value of 1 or OL, then there is a short circuit in your electrical circuit.

clean your solder with a solder wick and do the test again with a multimeter, is it still short or not

if you seing a certain resistance value other than OL, means your charging port has no problem,

the problem is other part on motherboard

Send it to a professional to get service handling assistance.

good luck