Help, a website pops up when windows starts

[Theguythatneedshelp]

I don't what exactly, but i guess i download something and now after my windows restarts as soon as my internet starts working my chrome turns on and some russian website turns on. How can I find what is the cause of this, i don't have any weird or unknown software installed.

 

[jrrdmchls]

First step i would do is run your antivirus software...

 

[dudio]

MalwareBytes and Adwcleaner.
Some antivirus software don't catch malware. These two will, and are free