Remove open dns on a laptop

I run a script that is to be used on students computers in my school on a teacher laptop and open dns was installed

I can't seem to remove it now cause when I go in ipv4 and change the dns it goes back automatically to 127.0.0.1

Any idea how to do this without reimaging???
brian ramdhaniCT Technician Asked:
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JohnBusiness Consultant (Owner)Commented:
Try TCP/IP Reset to see if that clears it.

Open cmd.exe with Run as Administrator
Then  netsh int ip reset c:\resetlog.txt
Also, ipconfig /flushdns followed by net stop dnscache followed by net start dnscache
Then restart the computer
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btdownloads7Commented:
I'm not sure that OpenDns has anything to do with your issue -- it wouldn't have set the DNS server to 127.0.0.1. There could be a couple of other things causing it (some kind of a proxy installed on that computer, or a virus), so you should look at the list of intsalled programs to see if anything jumps out, and run some malware scans (with RogueKiller and MalwareBytes).

Also, if that PC is set up as a part of a domain, there could be a startup script running that's resetting the DNS server, or a GPO that's doing the same thing.

And finally, if you think that neither of the above applies to you, you can try resetting the TCP/IP and Winsock catalog to see if that helps. open the command prompt, and run the following commands:
netsh int ip reset
netsh winsock reset

Open in new window

then restart the computer, and see if that helped
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JohnBusiness Consultant (Owner)Commented:
@slingingshot15  - Thanks and I was happy to help.
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