Hi Znar,
Welcome to the HP Community, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I will be happy to help with your issues connection to the internet but I will need some additional information. What operating system did you just reinstall? What is your product number? Under Device Manager what do you see listed under Network Adapters? Are you getting an error message when you try and connect?
Thank you,