Why won't my laptop charge

@tclyrics you are not giving us much information to work with. You need to tell us what the issues are. If your computer is not charging it can be other things than your charging port. Make sure that your AC adapter has the proper voltage (20V DC in your case) and check the adapters connector. Make sure there are no bend or broken pins etc.

Check the charging port. Clean it of any debris etc, use a few puffs of air to clean it out. Make sure there is no corrosion, debris etc. that prevents it from working. If none of this works, get an ammeter and see if your phone draws any amperage from the charger.

Of course, you may also have to consider replacing the battery. A depleted battery can no longer be charged.

You can also measure the charging port on the connector on the board to see if the voltage increase when you connect the AC adapter. Measure the voltage on your battery connector without the AC adapter connected and then measure it with the adapter connector. If it does not increase it's either the connector or the charging circuit. If it does increase then it is somewhere in your battery power circuit.

Now, if you are certain that this is related to a damaged charging port, then be advised that your connector is soldered to the circuit board and will require to be soldered. Replacement ports are readily available.

Use the Lenovo LOQ 15AHP9 Hardware Maintenance Manual to work on your laptop