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Ethernet Cable Unplugged After Windows 10 upgrade Semi solved
Reinstalled Windows10Pro x64 this week and all fine. The root cause was the issue with Ethernet Cable Unplugged after Windows 10 upgrade to the most recent version 1607 and all updates.
Got a new router from ISP as thought something may have gone belly up with it after testing second system via LAN, same thing red cross even though connect.
All cables are good and were working pre which ever update caused the issue.
So no Ive reinstalled and still have the problem.
Updated to latest Realtek Drivers :
Realtek
Discovered that the Speed and Duplex being on auto Negotiate results in the red cross on the Ethernet port issue.
Solution to get the LAN connection working was to select 100mbps Full Duplex. Great internet working and router was actually fine.
NOW THE PROBLEM:
My internet is 200mbps and I was getting this fine until a recent windows 10 update. I dont know which one has done this.
Due to the restriction with 100mbps my internet speed is now halved. Not an issue apart from the fact I am paying for 200mbps and this has worked fine since the speed upgrade almost a year ago.
My question is why does the auto negotiate or selecting the 1gbps full duplex result in the Ethernet socket thinking there is no cable connected (red cross).
Two routers can not be wrong both of which are ISP provided with:
Four Ethernet 10/100/1000BaseT ports
I've logged onto the router and cannot see anywhere for checking that 10/100/1000 can be selected/deselected so pretty sure the router is auto configured for all 3 speeds.
I am the only system connected when trouble shooting so I know nothing else can be taking the bandwidth.
I have tried to find out what the cause is and can only conclude Windows10 update as impacted something along the way.
Any help greatly appreciated please.
ADDED FOOTONOTE
I have 3 network ports on my system (1 on mobo and 2 on an expansion card). All 3 worked fine prior to the update. All 3 have the same issue. I am using the main ethernet socket on the mobo.
Last edited by mfx; 06 Nov 2016 at 04:47.