Can't go to google.com on any browser

[ComputeringKoda]

I don't know what i downloaded or someone else downloaded but it changed a lot of things i got everthing back to normal but i can't got to google.com

when i try to go to google.com it redirects me to this https://www.dropbox.com/home?preview=Screenshot+2017-01-12+22.15.34.png

 

[rgd1101]

check you dns server settings?