Sounds system based. You likely have poorly written spyware. See this SuperUser article for recommendations
Your host file may be modified:
Check your host file:
- Press
+ R
- Type: %systemroot%\System32\drivers\etc press ok (you may need to tell it to show system files)
- Double click on hosts and open with Notepad
- The only line that should not have a # before it should be
127.0.0.1 localhost (if this is a work computer, check with your IT staff before modifying this file).
- Erase anything that is not that and save.
If you are behind a admin controlled network you may not be getting a good address for Google.
- Press
+ R
- Type cmd press ok.
- In the black command window type: nslookup google.com
it should look something like the following (not exactly the same numbers though)
Name: google.com
Addresses: 2607:f8b0:4009:804::1006
173.194.46.36
173.194.46.37
173.194.46.46
173.194.46.34
173.194.46.38
173.194.46.35
173.194.46.33
173.194.46.32
173.194.46.41
173.194.46.40
173.194.46.39
Edit due to comment:
You certainly have malware. Your DNS is hijacked.
Follow the recommendations in the article I've linked above, I recommend Malwarebytes Free.
You may need to free your DNS see this Microsoft article to check your DNS. You want it set to automatically obtain. If it is already set to automatically obtain, you may find it difficult to download anti-malware programs, in which case you should obtain them from another computer and portable media(thumb drive probably).