Random internet drops on wired connection

Hello,

I kinda need a hand with this. This issue has been present since at least early 2021, but it's escalated to the point where it happens pretty much everyday. It's also survived across three Windows clean installs, and WiFi connection is unaffected (I'm wired on my Desktop PC).

Internet just drops for a few seconds. It happens randomly - it can be stable for a few hours and then all of a sudden drop several times in a matter of few hours.

This is what I tried so far with no success:

* Running sfc /scannow.
* Checking router signal levels.
* Swapping ethernet cable between different LAN ports.
* Replacing the ethernet cable.
* Disabling proxy.
* Disabling network discovery.
* Disabling smart multi-homed name resolution via GPO.
* Disabling IPv6.
* Preventing Windows from turning off the adapter to save power.
* Running ipconfig with /flushdns /release /renew arguments.
* Resetting winsock.
* Reinstalling the network adapter.
* Updating the network adapter driver.
* Changing DNS to Google's.
* Changing DNS to Cloudflare's.

I probably forgot something but it's all I can remember for now. Thought replacing the cable would make the trick but clearly it didn't, and I don't think it's a faulty network adapter since it responds to pinging all the time. Also since WiFi works normally and router signal levels are within normal values it's unlikely ISP is the culprit here (it's a Sagemcom F@st 3890 v3 by the way).

I'm pretty much clueless at this point. Any help? You can find all specs on my profile.

Thanks in advance

Hi there!

Have you ever checked the RJ-45 Pins on both the Computer and Router?
I came across the problem a long time ago and one pin on the Router was nearly broken off. Had to solder a new RJ-45 female back on.

It's rare.

marmalade22 said:

Hi, thanks for your input as I haven't thought about that. I just checked and everything seems in order, both on the router and PC ethernet port.

Have you discussed this with your ISP?
Also, have you ever performed a hard reset on the Sagemcom - i.e., power disconnect, wait 30 seconds, then reconnect and power-on?

marmalade22 said:

It's a 50 Mbps ADSL connection.

I'm not surprised. A DSL or ADSL copper based connection might have it's moments.
However, to prove that, take two computers and see if it happens to both at the same time.

If it does, then contact your ISP.

Hi again.

If this issue is solved, please mark it as such.

Thanks!

marmalade22 said:

For some reason, the adapter is flip-flopping between 100 and 1000 Mbps, and it appears it's the root cause of the drops. I just went to Device Manager, selected the Network Adapter, went to Properties and then the Advanced tab. From there I selected Speed & Duplex and changed the value to 1.0 Gbps Full Duplex.

Well, since it is a wired connection, it should be set to Full Duplex and the 1 Gbps setting won't hurt either. Mine is set to Auto-Negotiation, but I'm using Wi-Fi so it does not apply with that interface.
Should it not work, or is inconsistent, back it down to Full Duplex and 100 Gbps.

Please post back with your result after what you feel is a reasonable amount of time.

Thanks.