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A personal computer that resides in one location with its core components inside a case separate to third-party peripherals required for operation, such as a mouse, keyboard, and monitor.

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Ethernet connection disappeared from device manager. HELP!

Currently running Windows 10 on an ASRock B450M/ac

left for the weekend to attend a bachelor party and returned to no Ethernet connection. The device was hidden in device manager, I checked for driver updates, nothing. So I uninstalled the driver and nothing popped back up in its place upon reboot. Strange…. so I checked and sure enough there was a windows update that ran the day after I left. Surely this is the problem! Rolled back the update aaaaaaand…. still nothing. The cable is fine, as it is plug-and-play with my laptop, and I’m running out of ideas as to why. I’d flash my BIOS, but my internet connection is VERY shaky without LAN, and while there was an update to my BIOS, it was implemented far before my issues began. I tried resetting my BIOS settings and that hasn’t worked either. Am I safe in assuming that the physical Ethernet port is broken despite showing a link light? Am I going crazy? (The answer time that one is yes.) Please tell me there is something simple I’m missing before I go out and buy a new NIC or motherboard!

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Hi @tomthomp,

Did you check in BIOS > Advanced > LAN Power Enable to see if it is enabled?

If it is try disabling it and the re-enabling it, save the changes and restart etc.

Also is there a category listing shown in Device Manager for “Other Devices” at all? If so check there to see if the LAN adapter is shown there. If so, here are the latest drivers for the motherboard.

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Hi @tomthomp

check inside bios if it has been disabled.

do you have a screenshot of the the device not detecting?

if you have a another bootable "live" OS usb, e.g. linux which you can download and check if the network card is detecting and okay.

i had some experience which the win os somehow got corrupted.

but upon testing on another live os it works.

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thomas garneau zal eeuwig dankbaar zijn.
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