How to shut down proxy server that keeps turning itself on?

Okay so I don't remember when this started happening but there was this one time when I opened google chrome on my laptop and it said something like this:

 

..So then I tried opening other browsers but the same thing kept happening.. It was really frustrating and confusing how there was no internet connection while my wifi connection was workig just fine, on my laptop and on other devices.
So my last option was to check LAN settings and my life would have been dozens of times easier if the LAN settings button wasnt greyed out, like it is here: 

And there it says; "Some settings are managed by your system administrator." Hold on a second, I am an administrator!? What is going on?
And then, after days and days of going insane I found a little solution that helped but unfortunately it is not a permanent one, it goes like this:
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1.) Open regedit as an administrator.
2.) Navigate to:  Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel
3.) Right click on Connection settings, then press modify, and change the value data from 1 to 0, press OK and exit Regedit.

By doing this I was enabled to enter LAN settings but I still wasn't able to actually save those settings the way they are supposed to be because my computer thinks that I am not an administrator. Then I thought of opening Google Chrome by right clicking on it and opening it as an administrator, I opened settings, scrolled all the way down to "advanced", then scrolled all the way down again and pressed on; "Open proxy settings".
Then it navigated me again to Internet properties, but only this time I was actually able to save LAN settings, because this time I was recognised as an administrator.

Only the problem is, I have to repeat this process every single day. First I was okay with it because I was happy that I can finally access Internet, but after some time it got really frustrating. I can't pretend and live with the fact that everything's fine when it's not!

I need help, I am going insane. I want to know what is going on, what is wrong with my admin rights, why do I have to repeat that process everyday.
I read on the internet that probably some program has taken over my admin rights when I installed it, the funny thing is, I know I didn't install anything new on my PC when this happened. It came out of the blue!

So I beg of you, if you have encountered a simillar problem, or might know what is going on, please help, any help will be appreciated! Thank you and sorry for the long post!