My MSI motherboard recently had an audio issue and crashed/corrupted my PC.

I RMA'd it and did a fresh install of windows.

I fire up my PC - no internet. After some fiddle-fucking around, I try an Ethernet to USB-C adapter. Works fine.

I try a wifi dongle, no issues.

Okay, motherboard issue related to the Ethernet port then, right?

Except, I plug my Ethernet cable directly into my modem, and now it's working totally fine.

Hmm, router issue? But why is it working with the usb-C adapter? Why does it work when I plug it into my steam deck? Factory reset. No dice.

Drivers updated, windows updated, everything has been disabled, re-enabled, reset, turned off and back on, etc. I'm losing my mind.

I would really like to be able to plug my expensive PC directly into my router via Ethernet, but I can't seem to make it happen. Tried two different cables (which work with other devices).

When I connect, it says it's identifying network and then gives me a 169 IP address - DHPS error then? But why wouldn't that be resolved by the clean install and the factory reset?

Everything is set to auto in terms of IP and DHPS. Everything is enabled as it should be. No firewall. No security. No blacklisted devices. Why won't my router assign an IP address to my PC when connected directly via Ethernet? And why is it working fine when connected to my modem?

msi motherboard and TP-link router by the way.

Edit: Alright folks, I'm just going to squeeze in a network card. I don't want to do another three weeks with no PC and this mobo is just old enough that I don't feel like RMA'ing repeatedly unless I have to. I really tried everything and have ruled out the router and Ethernet cable. Thank you all so much for your help.

Edit: Threw a new network card in. Used my second PCIEx16 slot. Nothing will fit there anyway since it's microatx and my gpu takes up so much space. Working great. So probably the mobo having an ethernet defect - not terribly surprising considering this was just RMA'd and they sent me back the same mobo after repair. If it shits the bed again, I'll just get a new mobo entirely. it's not an expensive one luckily. Thanks again everyone!

Hi all, I've had a Netgear XR300 serve me fairly well for the past 5 or so years, but in the last few months I've had increasingly frustrating levels of failure. Things like sustained 100% CPU utilization, individual machines connected but unable to access internet, being unable to access the router admin page, individual machines suddenly having their ping go to 500-2000ms and bandwidth down to the kB range (I have symmetric 300Mbps up/down).

As a potential, I've been eying the Firewalla Purple to become my new router for a few reasons (Netgear not getting security updates, Firewalla has Wireguard support, etc.). The Firewalla only has short-range wifi, so my question is this:

Would using a Firewalla as a router and using the Netgear device as an access point for wireless connectivity be likely to mitigate these kinds of issues?

I've realized I lack the knowledge on which aspects of connectivity would be handled by two discrete devices, so I'm hoping to suss out if this is a viable solution.