Ethernet Can't Obtain an IP Address from My Router

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  1. Posts : 11,176
    Windows / Linux : Arch Linux
       #11

    Bulldog said:
    I really appreciate everyone's ideas!

    I'm working through the suggestions, and here's an update:

    I removed my Kaspersky software using Kaspersky's own uninstaller (kavremover.) This did not solve the problem, unfortunately.

    Next step: Restoring my router to default settings.

    - - - Updated - - -

    I performed two final steps:

    I booted my computer from a live Linux distro; Linux detected my Ethernet controller but could not obtain an IP address for it from DHCP (demonstrating that the problem is not caused by Windows.)

    I reset my modem to factory defaults - no help.

    Therefore, it seems very clear to me that my problem - I am unable to obtain an IP address for an Ethernet connection - can only be caused by the router hardware. My router is 7 years old, and nothing lasts forever ... I accept that. Still, it does seem mysterious to me. My router consists entirely of electrical components - there's nothing to wear out or break. As long as I don't abuse it, it should probably last forever and the only reason I would have to replace it is because newer equipment is so much better.

    My final step was to contact the router manufacturer (ASUS) who assigned me a case number. I can't imagine what incentive they have to assist me with a 7-year old router, but I'll give it a shot.
    Hi there

    @Bulldog

    it's rare that a router fails but it does happen. The final thing you can try is the "Hardware reset" -- some older routers have a small hole where you need to insert a small point (straighten out a paper clip is usually a good "tool"). Press for around 15 secs -- and the router should get reset back in its entirety to factory conditions -- all user settings / passwords will be reset so ensure you know get the relevant data before doing the "hard reset".

    (Check the manual documentation -- if you haven't got it this stuff is usually "findable" via google - to get the exact hardware reset for the router as it might be different in your case --you need to ensure its a complete factory hardware reset -- not just a shutdown and re-boot of the router.

    If this still fails then you have either a router problem or ISP disconnection somewhere (or both). If the router can still show a wireless network even though no Internet connection possible chances are that the ISP connection settings have changed / are incorrect (i.e the upstream WAN side).

    Cheers
    jimbo
      My Computer


  2. Posts : 62
    Windows 10
    Thread Starter
       #12

    I'm now more thoroughly than ever convinced that I need a new router. I installed a new Ethernet adapter - TP-Link TG-3468 - which is supported on Windows 10 and has a Windows 10 driver ... and the same problem persists. Thus, I've had the same problem (Ethernet can't contact the router) with my on-board Ethernet controller and with two separate Ethernet adapters.

    The only thing that bothers me about this conclusion is that a router is entirely solid state. There's nothing to break or to wear out. As long as it's not physically damaged, it should last for an indefinite period of time. So what went wrong? I guess I'll never know.
      My Computer


  3. Posts : 1,484
    Win10 Pro
       #13

    Hi Bullfog. Solid state devices are definitely not immune to failure. They can fail in a variety of ways. The circuit traces can break from mechanical damage or repeated heating/cooling cycles. And the same is true for soldered connections. Individuals circuit board components can rupture from age and heat as well. I had a PC that would boot up laying on its side but not standing up. Turns out there was a nearly invisible fracture in one of the component solder joints.
      My Computers


  4. Posts : 12,427
    Win10 Version 21H2 Pro and Home, Win11 Pro
       #14

    I agree with SoFine409, electronics can be damaged, sometimes by seemingly small changes in the amount of power provided, sometimes by heat, sometimes by input fluctuations of signal voltages from other devices. It is usually impossible to track down the cause, takes a lab with test equipment and usually not cost effective unless seeing a large number of the same model showing up with issues.
      My Computers


  5. Posts : 1,604
    Win 10 home 20H2 19042.1110
       #15

    Have you contacted your Internet provider? It may be on their end .... just a suggestion
      My Computers


  6. Posts : 62
    Windows 10
    Thread Starter
       #16

    I accept that my router can possibly fail. I should be glad that it worked flawlessly for seven years.

    I don't think that my ISP is involved in this problem since I have no trouble accessing the internet when I connect the Ethernet cable directly to my modem.

    Thanks again for everyone's advice which I very much appreciated.
      My Computer


  7. Posts : 12,427
    Win10 Version 21H2 Pro and Home, Win11 Pro
       #17

    Most Routers have a Reset button [recessed], try that but beware that any passwords may be cleared which would need resetting for the Wireless/Wi-Fi access. I had to reset mine this morning but just using the power switch on the back of it did the trick. Pulling the power cord out for several seconds can also help 'normalize' things.
      My Computers


  8. Posts : 62
    Windows 10
    Thread Starter
       #18

    Berton said:
    Most Routers have a Reset button [recessed], try that but beware that any passwords may be cleared which would need resetting for the Wireless/Wi-Fi access. I had to reset mine this morning but just using the power switch on the back of it did the trick. Pulling the power cord out for several seconds can also help 'normalize' things.
    Did that ... see post #10 above
      My Computer


  9. Posts : 12,427
    Win10 Version 21H2 Pro and Home, Win11 Pro
       #19

    Bulldog said:
    Did that ... see post #10 above
    Missed it, eyes not too good after 12 chemo treatments since May.
      My Computers


  10. Posts : 62
    Windows 10
    Thread Starter
       #20

    Berton said:
    Missed it, eyes not too good after 12 chemo treatments since May.
    Wow! You are one tough customer. Kick that cancer to the curb! Make it fear you.
      My Computer


 

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