@Busu Welcome to HP Community!
I understand that you would like to replace the wireless card.
A few things to remember are mentioned below:
The compatibility of your router with the wireless card,
If the wireless card is 1x1: supports 2.4 GHz and below - slow connection and download/upload speed,
If it's 2x2 or more: support 5 GHz and above - Fast connected and speed.
Intel Dual Band Wireless-AC 7265 802.11 ac 2x2 WiFi + BT 4.0 Combo Adapter (non vPRO) 793840-005
In that case, I would suggets you contact our phone support and check for the support option. They will help you.
Or you can contact local service center for repair.
Here is how you can get in touch with phone support.
1)Click on this link - www.hp.com/contacthp/
2)Select the product type.
3)Enter the serial number of your device or select let HP detect your product option.
4)Select the country from the drop-down.
5)You should see the HP phone support number or Chat option listed.
We are experiencing longer than expected wait times to reach an agent due to the CoViD-19 impact and there might have been issues in you getting the expected resolution on the issue.
Keep us posted,
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Give us a virtual high-five by clicking the 'Thumbs Up' icon below, followed by clicking on the "Accept as solution" on this post,
Have a great day!