I have an HP 15-r233wm and the WiFi works only occasionally

[SVJeff]

I have an HP 15-r233wm and the WiFi works only occasionally. I’m wondering if I should replace the WiFi card or if it’s a software/setting issue. Where should I start?

[Paul_Tikkanen]

It could be the Wi-Fi card.

The notebook probably has the latest driver installed which was from 2019.

This is the latest driver for the Realtek RTL8188EE Wi-Fi card:

2024.0.4.208   05/26/2019

https://ftp.hp.com/pub/softpaq/sp112501-113000/sp112990.exe 

You could install this model Wi-Fi card which also has Bluetooth, but it would also use the same old driver from 2019 and is still only a single band Wi-Fi card like the one you have now.

Realtek RTL8723BE 802.11bgn 1×1 + BT 4 LE Combo Adapter   HP part #753077-001.

Any of those at the link below except the second one which is a M.2 form factor. 

Your notebook uses the older style Half Mini Card (HMC) form factor.

753077-001. | eBay

Below is the link to the service manual:

HP 15 Notebook PC Maintenance and Service Guide

Another option would be to purchase a dual band USB Wi-Fi adapter.

I use this model for example which is small and also has Bluetooth.

Amazon.com: USB WiFi Bluetooth Adapter, 600Mbps Dual Band 2.4/5Ghz Wireless Network External Receive...