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scottman586

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23 days ago

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scottman586

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January 26th, 2026 17:59

Aurora ACT1250, Ethernet keep dropping

The ethernet on my new ACT1250 periodically disconnects once or twice per day. Things I've tried so far:

  • Hard resetting our router/modem (no other devices are having issues)
  • Replacing ethernet cable
  • Uninstalling Killer Intelligence Center, reinstalling it and playing with settings, uninstalling it again
  • Clean install of Killer E3100G 2.5 Gigabit Ethernet Controller driver
  • Disabling "allow the computer to turn off this device to save power" setting on the ethernet controller
  • Uninstalling Dell Support Assist

And I'm sure there's more that I can't remember. Any other suggestions would be appreciated.

(edited)

  • scottman586

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    Posted February 12th, 2026 18:57

    Posting again to bump. Still experiencing this issue. Would love any more suggestions.

  • bradthetechnut

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    Posted February 13th, 2026 05:04

    Did any of the Killer stuff reinstall on its own?

  • scottman586

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    Posted February 13th, 2026 17:42

    @bradthetechnut​ None of it did as far as I can tell.

  • Tesla1856

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    Posted February 13th, 2026 19:24

    @scottman586​ ,

    Since both are "Killer of Networking" on-board NICs, the troubleshooting and tips I posted here apply to you as well.

     

    https://www.dell.com/community/en/conversations/alienware-desktops/aurora-r11-lost-rj45-network-connection/697d4cb8918dc91cb425af4d

    (edited)

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  • user_b26c68

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    Posted February 22nd, 2026 15:12

    This is happening to me as well - basically same issue.

    I've noticed it seems fine after a restart, but if I let my computer sleep and start up a few times, it starts to become more unstable. Not sure if this solved it yet but so far shutting down each night is helping, and shutting off SLEEP timer.

  • sebscorpy

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    Posted August 7th, 2026 12:05

    Same issue here, tried new cable, new router and still get the same disconnect issues randomly.

    Would appreciate a true resolution. 

  • scottman586

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    Posted August 7th, 2026 16:29

    @sebscorpy​ I haven't found any permanent fix, but what @user_b26c68 said above about making sure I shut down the PC each night really helped. I very rarely encounter the issue now, and it is almost exclusively if I've left it on all day and it's gone to sleep a few times.

  • redxps630

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    Posted January 26th, 2026 19:04

    If pc is on from early am to late pm all the time, assuming OP is using it most of the time, does Ethernet drop at random 1-2 points early on then stay steady throughout rest of day, or is it the other way around (steady for most of day but drops off 1-2 times towards end of day)? 

  • scottman586

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    Posted January 26th, 2026 19:06

    It seems truly random. I've had it drop in the middle of the work day, and also at the end of a day while gaming before bed.

    The immediate fix, which I realize I should have mentioned in my original post, is always to unplug the cable from the back of the PC and plug it in again. Fixes it right away as soon as it reconnects.

  • redxps630

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    Posted January 26th, 2026 23:06

    Did you replace Ethernet cable with a brand new one or just another cable you find in house?

    Try a brand new Cat 6 cable if not already done 

    Try a different Ethernet port on your router or even better, try a different router.

    (edited)