DNS or DHCP error

N

NanML

Dear Good Samaritans

My ACER laptop network suddenly stops working. The symptoms are: Only Google sites and some other sites are accessible. All others will return the error: DNS PROBE FINISHED NXDOMAIN. All other mobile devices and the other Thinkpad work fine in the same network.

The router is Telekom Speedport.

I have tried:

1. Restart Router/Modem.

2. Reinstall and Rollback Qualcomm Atheros Driver

3. Checking DHCP client in registry/in task manager/in command prompt, the result is access denied. But it is currently automatic.

4. Wired client and WLAN client in registry, all automatic. Not helpful.

5. ipconfig/release and renew: can't connect DHCP

6. netshell commands: not helpful.

7. Network reset: not helpful

8. Troubleshooter: returns different answers, sometimes no valid IP, sometimes no DNS, sometimes no problems.

9. Router firmware update: does not affect anything

10. Windows update to 20H2


Can anyone help me with this persistent issue?


EDIT: My current IP is 165XXX. I think the DHCP has errors.

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