Hi @iusman290 ,
It’s a pity that you don’t have a multimeter as you could have used it to prove whether there is an intermittent connection in the power connector port or not and also to test the charger voltage.
Do you have access to one or know anyone who has one so that they can be checked?
Again this is only for elimination purposes but it would be a shame if you spent all your time trying to find the problem and it turned out to be the power connector or the charger.
Anyway not that you need it but here’s the [http://h10032.www1.hp.com/ctg/Manual/c04642845|maintenance and service manual] for the laptop, taken from this [https://support.hp.com/us-en/product/hp-pavilion-15-ab500-notebook-pc-series/9068229/model/11058906/manuals|webpage].
Go to p.69 and you’ll find the power connector cable removal procedure and more importantly the part number.
If you do need to replace it, search online using the part number ''only'' in the search term of your browser to find suppliers of the part.