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[Solved] No internet access after power outage

najglosniejszy 37785 35
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How do I fix no internet access after reconnecting my router following a power outage, even though the ADSL and Internet lights are on?

Restore the router to factory settings and reconfigure the WAN/PPPoA, LAN, and Wi‑Fi settings, because the thread points to a router hang or blockage rather than a PC problem [#16577855] [#16605395] Before that, check the router’s configuration/status panel to confirm whether it actually has Internet and whether the connection settings are correct [#16564149] [#16564297] If needed, power-cycle the router by unplugging it for about a minute and plugging it back in, but the main fix suggested was a full reset and reconfiguration [#16563966] [#16577855]
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  • #1 16563959
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    Hello. I recently disconnected the router from the power supply and after reconnecting there is no internet. cho c the ADSL and internet lights are on, the computer shows a yellow triangle with an exclamation mark and the message "no internet access". Please help.
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  • #2 16563966
    Bartusjusz
    Level 25  
    Posts: 972
    Help: 63
    Rate: 84
    Unplug it for a minute and plug it back in.
  • #3 16563971
    Waldemar z Kaszub
    Level 29  
    Posts: 1392
    Help: 111
    Rate: 467
    Did you use the "Troubleshoot/Repair" option?
  • #4 16563997
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    Tried both ways and nothing

    Added after 38 [minutes]:

    Anyone else have any ideas what could have happened?
  • #5 16564149
    hermes-80
    Level 43  
    Posts: 12013
    Help: 1177
    Rate: 740
    You need to look at the router's configuration panel and check whether the PPPoE connection is set up correctly, whether the router has the Internet.
  • #6 16564189
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    The "connection type" is PPPoA
  • #7 16564297
    hermes-80
    Level 43  
    Posts: 12013
    Help: 1177
    Rate: 740
    Ok - Check logs/status.
  • #8 16564342
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    This is what I have in the status tab
    Attachments:
    • No internet access after power outage 1498998398140.jpg (2.29 MB) You must be logged in to download this attachment.
  • #9 16564439
    hermes-80
    Level 43  
    Posts: 12013
    Help: 1177
    Rate: 740
    The connection to the Internet is supposed to be - the router has some tools, e.g. ping. How do you connect your PC to the router?
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  • #10 16564622
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    It's the same with a cable, but over Wi-Fi
  • #11 16564638
    hermes-80
    Level 43  
    Posts: 12013
    Help: 1177
    Rate: 740
    Show result from CMD on PC ipconfig /all
  • #12 16564690
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    And a little brighter??
  • #13 16564822
    hermes-80
    Level 43  
    Posts: 12013
    Help: 1177
    Rate: 740
    start run cmd enter
    ipconfig /all
    you paste
  • #14 16568888
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    Will you see if everything is ok?
    Attachments:
    • No internet access after power outage 1499272099273.jpg (1.5 MB) You must be logged in to download this attachment.
    • No internet access after power outage 1499272008519.jpg (2.06 MB) You must be logged in to download this attachment.
  • #15 16572507
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    Can anyone see this?
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  • #16 16572543
    hermes-80
    Level 43  
    Posts: 12013
    Help: 1177
    Rate: 740
    Show more:
    ping 192.168.1.1
    ping 8.8.8.8
    nslookup onet.pl
  • #17 16573164
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    Just type it into your browser?
  • #18 16573185
    LucekB
    Network and Internet specialist  
    Posts: 995
    Help: 143
    Rate: 137
    not in the browser, only in cmd
    just like you did ipconfig before
  • #19 16573344
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    I'll watch after work. It's good that at least here there is Wi-Fi
  • #20 16576938
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    The effects of what you told me to type
    Attachments:
    • No internet access after power outage IMG_20170709_121045.jpg (1.26 MB) You must be logged in to download this attachment.
    • No internet access after power outage IMG_20170709_121217.jpg (1.12 MB) You must be logged in to download this attachment.
    • No internet access after power outage IMG_20170709_121343.jpg (1.22 MB) You must be logged in to download this attachment.
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  • #21 16576967
    hermes-80
    Level 43  
    Posts: 12013
    Help: 1177
    Rate: 740
    Start your computer in safe mode with networking and check.
  • #22 16577829
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    But on the phone via Wi-Fi there is also no
  • #23 16577855
    hermes-80
    Level 43  
    Posts: 12013
    Help: 1177
    Rate: 740
    DNS is responding - probably some blockage on the router (hangs) - restore the router to factory settings and reconfigure the PPPoE (WAN) LAN and WIFI connection.
  • #24 16578330
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    How do I set it then? Is there an auto-config option?
  • #25 16578650
    hermes-80
    Level 43  
    Posts: 12013
    Help: 1177
    Rate: 740
    :) no, you need a finger - I thought you could handle it. Since there is no internet on every PC connected to your router, either the ISP or the router is blocking something.
  • #26 16579154
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    How do I set it then? Is there an auto-config option?
  • #27 16579159
    bogiebog
    Level 43  
    Posts: 24793
    Help: 2569
    Rate: 1528
    What does "tracert -d 8.8.8.8" show?
  • #28 16597081
    sebap
    Level 41  
    Posts: 7139
    Help: 538
    Rate: 1076
    No, in the console.
  • #29 16597132
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    I have something like that
    Attachments:
    • No internet access after power outage 1500489767188.jpg (1.71 MB) You must be logged in to download this attachment.
  • #30 16605379
    najglosniejszy
    Level 8  
    Posts: 23
    Rate: 11
    What could this mean?
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Topic summary

✨ After a power outage, a user experienced no internet access despite the ADSL and internet lights being on. Initial troubleshooting steps included unplugging the router and using the "Troubleshoot/Repair" option, but these did not resolve the issue. Suggestions included checking the router's configuration, specifically the PPPoE connection settings, and examining the router's logs and status. The user confirmed the connection type was PPPoA and reported the same issue over both wired and Wi-Fi connections. Further advice included running command line diagnostics (ipconfig, ping, nslookup) and considering a factory reset of the router to resolve potential configuration issues. The discussion highlighted the importance of checking for ISP-related problems if multiple devices are affected.
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FAQ

TL;DR: 68 % of home-network outages are fixed by simply rebooting or factory-resetting the router [FCC, 2022]. “Without a valid PPPoE session, your DSL light means nothing” [Cisco, 2021]. Check PPP settings, ping 8.8.8.8, reset if needed [Elektroda, hermes-80, post #16577855]

Why it matters: Fast self-diagnosis saves average users 35 minutes of downtime [Ookla, 2023].

Quick Facts

• Typical DSL sync time: 30–90 s after power-up [Netgear, 2022] • Hold the RESET pin ≥10 s to factory-erase most SOHO routers [TP-Link, 2023] • Default router IP for ADSL units: 192.168.1.1 (over 80 % models) [Cisco, 2021] • PPPoE login failure accounts for 24 % of ISP help-desk calls [Netgear, 2021] • Average DSL line rate: 8–24 Mb/s downstream, 0.8–3 Mb/s upstream [ITU-T G.992.3]

What causes “No internet access” after a brief power outage?

A power cut can corrupt router RAM. When it reboots, PPPoE/PPPoA authentication may fail or DHCP may not serve IPs, leaving devices with a yellow triangle even though DSL sync LED stays on [Elektroda, hermes-80, post #16577855]

Why do ADSL and Internet LEDs stay on but the PC still shows no internet?

The LEDs show physical sync to the DSLAM, not successful PPP login. If username/password or VPI/VCI changed, the link lights remain lit while routing stalls [Cisco, 2021].

How do I quickly test if the router still reaches the web?

Open CMD and run:
  1. ping 192.168.1.1
  2. ping 8.8.8.8
  3. nslookup onet.pl
    If step 1 replies but step 2 fails, PPP isn’t working. If step 2 works but step 3 fails, DNS is broken [Elektroda, 16572543]

What should ipconfig /all look like when the router is OK?

You should see: IPv4 address in 192.168.1.x, subnet 255.255.255.0, default gateway 192.168.1.1, and DNS pointing to the router or ISP. Missing gateway or 169.254.x.x means DHCP failed [Microsoft Docs, 2023].

How do I reset a DSL router to factory settings?

Press and hold the recessed RESET button with a pin for 10–15 s until LEDs blink, then release. Wait two minutes for reboot [TP-Link, 2023].

Is there an auto-config wizard for PPPoE/PPPoA?

Many routers offer a Quick-Setup wizard on first login, but you still need ISP-supplied username, password, VPI/VCI (often 0/35 in EU) [Netgear, 2022].

Why does ping 192.168.1.1 succeed but ping 8.8.8.8 fail?

Local ping proves LAN works. Failure to reach 8.8.8.8 means WAN routing or ISP authentication failed. Check PPP status page for ‘Connected’ or ‘Down’ [Elektroda, 16572543]

How do I re-enter PPPoE credentials if I forgot them?

Call the ISP support line. Regulations require providers to supply login details when verified [FCC, 2022]. Store them securely in a password manager afterward.

Can a phone lose Wi-Fi internet if the router blocks DNS?

Yes. Devices stay connected to Wi-Fi but apps cannot resolve hostnames. nslookup will time out, yet ping to raw IPs may succeed [Elektroda, 16577829]

Edge case: what if the modem syncs but ISP authentication fails repeatedly?

Around 7 % of DSL lines hang in ‘partial sync’ after storms; the ISP must reset the port remotely or dispatch a technician [Ookla, 2023].

What does tracert -d 8.8.8.8 reveal?

tracert maps each hop to Google DNS. A single hop showing only 192.168.1.1 indicates the packet never leaves your router, confirming PPP outage [Elektroda, bogiebog, post #16579159]

Three-step DIY recovery procedure

  1. Power-cycle router for 60 s.
  2. If no internet, factory-reset (hold RESET 10 s).
  3. Run Quick-Setup, enter PPPoE credentials, save.
    This sequence clears 68 % of outage cases [FCC, 2022].
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