Hi DariusXerxes,
Welcome to Microsoft Community.
I understand that you have encountered the problem that you can't connect the notebook and the monitor using the HDMI-VGA converter.
From your description, your computer does not recognize this monitor, but the Windows 10 device can be used normally, you can click win+X, select "device manager", and see if there is "other devices" or similar unrecognized device of. If the device is not recognized, the problem is that the appropriate driver is missing. You can right-click on the device and select Properties >> Drivers >> Update Driver Now.
If Windows cannot automatically install the driver, you can check your graphics card model and go to the corresponding manufacturer's website to download the official driver provided by them to install it.
If the device appears in "Monitor", then your notebook has recognized the monitor, but may not be able to use the monitor due to compatibility issues.
If no device appears in the device manager, and you are using Windows 11, then the problem may be that Windows 11 is not compatible with this adapter or monitor, it is recommended that you try a different adapter.
Please feel free to let me know how it goes.
Kirk | Microsoft Community Support Specialist
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