Internet connection wonky on one laptop

The internet in my house works fine for all connected devices *except* one of my laptops. My modem has two networks on it, a main and a guest, and last night, I suddenly started having problems with not being able to connect via either network. I just ran the troubleshooter and got the following:

Issues Found
"Wi-Fi-2" doesn't have a valid IP configuration - Not fixed
Reset the "Wi-Fi-2" adapter - Failed
Investigate router or broadband modem issues - Failed

As I said, the laptop I am posting with and my phone both connect to the internet just fine (as does a desktop that is connected via ethernet) so I'm confident that the internet is up and the modem is working for the other devices so it must be working on the laptop that won't connect. The problem appears to be isolated to that one laptop. I'm at a loss to know what is wrong with that laptop though. The problem laptop is connected wirelessly via a Dlink wireless dongle that I've only had a couple of months.

How can I determine what is wrong and fix it?

The problematic laptop is running Windows 10 64-bit version 21H2.

try these 2 commands in an elevated command prompt
- netsh winsock reset
-netsh int ip reset
then restart your pc and see if it worked.
if that didn't work, check your wifi adapter driver, it could be outdated.
you can also try Windows repair if you're okay with third party software.
Tweaking.com - Windows Repair Free/Pro
you don't have to do a full repair. you can navigate to repairs tab then click "Open repairs" and choose repair network and let it run. it should do the trick

OP

- Removed the Dongle
- Resetted TCP stack
- Typed ipconfig /all

Case resolved... What a team !