@tmcglover56721 could be an issue with the AC adapter or the power connector. Time to change the battery and to measure the AC adapter. Check the connector to see if it is still tight in the connector or if it developing some slack that may cause it to disconnect. Here is the [http://h10032.www1.hp.com/ctg/Manual/c04434142.pdf|service manual] for your laptop. Also, there are /were issues with the power cords for the AC adapter for this model. Check [https://support.hp.com/us-en/product/hp-envy-15-k100-notebook-pc/7234894/model/7468081/document/c04404446|on here] for info on that.