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April 29th, 2026 12:51

Inspiron 3891, both WiFi and ethernet connected, no Internet?

Good day,

My Inspiron 3891 (purchased in 2021) will not connect to the internet - wifi and ethernet same result.  Connects to the router, is secured, but NO INTERNET.  This started happening after my APC UPS battery backup failed.  It must have affected the PC in some way.  Tried a USB - WIFI and a USB Ethernet replacement, but they also CONNECT - NO INTERNET.  I have BIOS-DISABLED the internal WLAN, same result.  I have DEVICE MANAGER disabled the onboard com device in order to assure that the USB WIFI and ETHERNET units were being used, but still NO INTERNET?   I suspect some sort of issue on the motherboard.   

I wonder if there is anyone in the Community who might have a helpful suggestion regarding this issue?   

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April 30th, 2026 12:52

Hi

Try one, some, all or none of the following...

ping 127.0.0.1 & ping 13.107.4.52

ping 192.168.0.1 & ping 192.168.1.1

tracert 13.107.4.52 (if the ping works)

tracert to any ping that works

netsh interface ip show interface

netsh lan show interfaces | more /c

powershell Get-NetAdapter

ipconfig /all

I feel that if there is a hookup to the router, then the DEFAULT GateWay may need setting/adjusting.

If in doubt please ask.

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April 30th, 2026 15:25

@anne_droid​ Hi.  I posted a reply with the results, but I don't see it here after doing so.  I am posting it a 2nd time, in case the first effort failed.  Sorry if it results in duplicate responses.  

PING 127.0.0.1:
===============
Pinging 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128

Ping statistics for 127.0.0.1:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms

PING 13.107.4.52:
=================
Pinging 13.107.4.52 with 32 bytes of data:
Reply from 13.107.4.52: bytes=32 time=18ms TTL=121
Reply from 13.107.4.52: bytes=32 time=13ms TTL=121
Reply from 13.107.4.52: bytes=32 time=13ms TTL=121
Reply from 13.107.4.52: bytes=32 time=15ms TTL=121

Ping statistics for 13.107.4.52:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 13ms, Maximum = 18ms, Average = 14ms


PING 192.168.0.1:
=================
Pinging 192.168.0.1 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 192.168.0.1:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),


PING 192.168.1.1:
=================
Pinging 192.168.1.1 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 192.168.1.1:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),


TRACERT 13.107.4.52:
====================
Tracing route to 13.107.4.52 over a maximum of 30 hops

  1     5 ms    <1 ms    <1 ms  10.0.0.1 
  2    26 ms    11 ms    14 ms  70.81.109.1 
  3    19 ms    24 ms    15 ms  10.170.192.209 
  4     *       19 ms     *     104.44.195.115 
  5     *        *        *     Request timed out.
  6     *        *        *     Request timed out.
  7     *        *        *     Request timed out.
  8     *        *        *     Request timed out.
  9     *        *        *     Request timed out.
 10     *        *        *     Request timed out.
 11    28 ms    12 ms    12 ms  13.107.4.52 

Trace complete.


TRACERT 127.0.0.1:
==================
Tracing route to 127.0.0.1 over a maximum of 30 hops

  1    <1 ms    <1 ms    <1 ms  127.0.0.1 

Trace complete.

NETSH INTERFACE IP SHOW INTERFACE:
==================================
Idx     Met         MTU          State                Name
---  ----------  ----------  ------------  ---------------------------
  1          75  4294967295  connected     Loopback Pseudo-Interface 1
 16          30        1500  disconnected  Wi-Fi
  5          65        1500  disconnected  Bluetooth Network Connection
 18          25        1500  connected     Ethernet

NETSH LAN SHOW INTERFACES:
==========================
The Wired AutoConfig Service (dot3svc) is not running.

POWERSHELL GET NETADAPTER:
==========================
Name                      InterfaceDescription                    ifIndex Status       MacAddress             LinkSpeed
----                      --------------------                    ------- ------       ----------             ---------
Ethernet                  Realtek PCIe GbE Family Controller           18 Up           C0-25-A5-9B-EA-69         1 Gbps
Wi-Fi                     Intel(R) Wi-Fi 6 AX201 160MHz                16 Disconnected 00-91-9E-C8-EB-AA       1.2 Gbps
Bluetooth Network Conn... Bluetooth Device (Personal Area Netw...       5 Disconnected 00-91-9E-C8-EB-AE         3 Mbps

IPCONFIG /ALL:
==============
Windows IP Configuration

   Host Name . . . . . . . . . . . . : AGE2021
   Primary Dns Suffix  . . . . . . . : 
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Realtek PCIe GbE Family Controller
   Physical Address. . . . . . . . . : C0-25-A5-9B-EA-69
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::3ca2:13d8:d74d:c17e%18(Preferred) 
   IPv4 Address. . . . . . . . . . . : 10.0.0.25(Preferred) 
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : April 30, 2026 3:32:01 AM
   Lease Expires . . . . . . . . . . : May 2, 2026 9:30:13 AM
   Default Gateway . . . . . . . . . : 10.0.0.1
   DHCP Server . . . . . . . . . . . : 10.0.0.1
   DHCPv6 IAID . . . . . . . . . . . : 180364709
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-29-30-FB-9F-C0-25-A5-9B-EA-69
   DNS Servers . . . . . . . . . . . : 2607:fa48:6d9f:5450:1691:82ff:fe2c:b9b5
                                       24.201.245.77
                                       24.200.243.189
   NetBIOS over Tcpip. . . . . . . . : Enabled

Wireless LAN adapter Wi-Fi:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Intel(R) Wi-Fi 6 AX201 160MHz
   Physical Address. . . . . . . . . : 00-91-9E-C8-EB-AA
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Bluetooth Network Connection:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
   Physical Address. . . . . . . . . : 00-91-9E-C8-EB-AE
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes


============================================================

I would appreciate any insight you may glean from the above... Thanks   Alan

=========================================================

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April 30th, 2026 16:54

@anne_droid​ - Hello again.  I started the dot3svc service and re-entered the NET LAN SHOW INTERFACES command.  Here is the result:

NETSH LAN SHOW INTERFACES:
==========================
There is 1 interface on the system:

    Name             : Ethernet
    Description      : Realtek PCIe GbE Family Controller
    GUID             : b56999e1-3b11-4455-a1d9-35a047651d9b
    Physical Address : C0-25-A5-9B-EA-69
    State            : Attempting to authenticate

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May 1st, 2026 12:28

Hi

You have an internet connection.

TRACERT 13.107.4.52:
====================
Tracing route to 13.107.4.52 over a maximum of 30 hops

  1     5 ms    <1 ms    <1 ms  10.0.0.1 
  ..................................................................
 11    28 ms    12 ms    12 ms  13.107.4.52 

Trace complete.

HOWEVER...

For 10.0.0.1, the usual default subnet mask is 255.0.0.0, which is also written as /8.

Yours is 255.255.255.0 /24.

Not sure HOW2 explain HOW2 correct that, but that is an area of error.

If in doubt please ask.

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May 5th, 2026 16:13

You can see it may be possible to set manually your SubNet Mask to 255.0.0.0, along with the current gateway etc from your listing.

IPv4 Address. . . . . . . . . . . : 10.0.0.25(Preferred) 
   Subnet Mask . . . . . . . . . . . : 255.0.0.0
     Default Gateway . . . . . . . . . : 10.0.0.1
   DHCP Server . . . . . . . . . . . : 10.0.0.1
   DNS Servers . . . . . . . . . . . :  24.201.245.77     24.200.243.189

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May 5th, 2026 16:15

Maybe the above will give some help.

(edited)

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May 6th, 2026 03:00

@Elwy88​  Did you try resetting your modem and router?

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May 6th, 2026 12:39

@bradthetechnut​ - I have reset every darn thing in the house.  :-)  -  I have 3 other PC's in the house all connected to the same network - working fine.  I compared a working PC's network status to the problem one - identical.  I carried the pc to a friends house and plugged in the ethernet and also connected to his wifi - the same problem existed there:  connected, no internet.   I suspect that this problem PC has a problem somewhere after the physical network infrastructure.  Something we can't get to without a soldering iron.  This problem started with a UPS POWER BACKUP unit failure.  I am thinking, now, that there was residual damage as a result of that failure.  

Alan. 

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May 6th, 2026 20:21

@Elwy88​  One can try reloading the OS.  Then you'll know if it's the software or PC that became corrupted.

I know you said you tried resetting everything, but did you try resetting BIOS, and beforehand, replace the size 2032 CMOS battery?  Try that before reloading OS.  PC was released in 2021.  Getting to be time for a new battery if not already.  Bad batteries affect BIOS and therefore PC operation.

Resetting BIOS is simple on the 3891.  With PC plugged into electrical outlet and with PC off, push and hold power button for 30 sec.

If all else fails, one can always get a new/refurb/used motherboard.  Probably fairly cheap on ebay.

Hopefully you're running all of the tests with PC plugged directly into a.c. outlet and not the failed UPS.

(edited)

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May 7th, 2026 08:15

Hi

Debian or Linux Mint or Zorin for example.

If you can ping to an external source, like

ping bbc.co.uk

then you have an internet connection.

(edited)

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May 7th, 2026 08:25

anne@SLmargin: 0;">PING google.com (2a00:1450:4009:c13::8b) 56 data bytes

64 bytes from st-in-f139.1e100.net (2a00:1450:4009:c13::8b): icmp_seq=1 ttl=114 time=10.3 ms

64 bytes from st-in-f139.1e100.net (2a00:1450:4009:c13::8b): icmp_seq=2 ttl=114 time=15.6 ms

64 bytes from st-in-f139.1e100.net (2a00:1450:4009:c13::8b): icmp_seq=3 ttl=114 time=12.4 ms

--- google.com ping statistics ---

3 packets transmitted, 3 received, 0% packet loss, time 2004ms

rtt min/avg/max/mdev = 10.262/12.756/15.571/2.179 ms

anne@SLmargin: 0;">PING bbc.co.uk (2a04:4e42::81) 56 data bytes

64 bytes from 2a04:4e42::81: icmp_seq=1 ttl=61 time=9.22 ms

64 bytes from 2a04:4e42::81: icmp_seq=2 ttl=61 time=11.2 ms

64 bytes from 2a04:4e42::81: icmp_seq=3 ttl=61 time=11.5 ms

64 bytes from 2a04:4e42::81: icmp_seq=4 ttl=61 time=10.8 ms

64 bytes from 2a04:4e42::81: icmp_seq=5 ttl=61 time=11.1 ms

64 bytes from 2a04:4e42::81: icmp_seq=6 ttl=61 time=11.1 ms

64 bytes from 2a04:4e42::81: icmp_seq=7 ttl=61 time=11.5 ms

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