Cannot connect vga EXTERNAL display to my hp laptop

[ijay]

I'm trying to connect my HP laptop to an external display. I have USB C on my laptop which I'm connecting to USB-C to VGA adapter. This adapter then connects to my monitor VGA port.

This setup with the same hardware works for my Dell laptop just fine.

My laptop detects the device as PTN5002. Does anyone know about this ? 

I have tried the diagnostics and updating driver and BIOS so please. I have tried restart while device attached too but it doesn't detect. No silly business. 

I see one similar issue here. But HP says this should be done via private message ! 

https://h30434.www3.hp.com/t5/Notebook-Hardware-and-Upgrade-Questions/Hp-spectre-2-in-1-13-3-USB-c-s...

Please help ! I can share a remote connection over teamviewer if you require. 

Thanks

[banhien]

@ijay 

Before we can help, we need to know what EXACTLY is your HP Laptop 14-cf0xxx ? Please use the following instructions to find out the model/product of your machine:

   https://support.hp.com/us-en/document/c03754824

             or

    https://support.hp.com/us-en/document/c00033108

Please do NOT post its Serial number (s/n).

Regards.