WLAN can't get lease from DHCP, driver issue?

I have a computer with built-in WLAN, and it just can't get any IP from the DHCP when using that adaptor. The signal strength and quality is excellent.

Using the LAN adaptor or a USB-WiFi adaptor works just fine.

To eliminate the router being the cause, I tried making a hotspot on my mobile phone, and the same behaviour repeats itself there: it connects without problems, but it doesn't get an IP from the DHCP server.

So I suspect it's the driver for the built-in WiFi adaptor that needs updating.

The computer is running the latest version of Windows 10 Pro x64 (downloaded+installed yesterday).

The motherboard is: Asus M4A88T-I Deluxe. It's about 5 years old, but has only been in use for about 1 year. I don't think it is defective in any way.

The WLAN adaptor is: AzureWave, Model no: AW-NA830

The adaptor installs as 802.11n Network Adaptor. Driver from MediaTek, Inc. Driver date/version: 2016-06-06 / 5.1.16.0 (Default Microsoft driver from Windows Update.)

Hardware ID: USBVID_0B05&PID_1742&REV_0101 + USBVID_0B05&PID_1742

I can't find any drivers from Asus or even AzureWave :-/

Any advice is appreciated.

Ipconfig output (disabled adaptors removed for brevity):

Windows IP Configuration
Etheet adapter Etheet: Connection-specific DNS Suffix . : Link-local IPv6 Address . . . . . : fe80::fd9c:2f8f:9d79:347c%4 IPv4 Address. . . . . . . . . . . : 192.168.1.124 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.1
Wireless LAN adapter Wi-Fi: Connection-specific DNS Suffix . : Link-local IPv6 Address . . . . . : fe80::20dd:2986:3fe6:3577%7 Autoconfiguration IPv4 Address. . : 169.254.53.119 Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . :

Photo of the WLAN adaptor: