hi im trying to download league of legends and when i try and run the leagueoflegendsdownloader it says no internet connection detected please reconnect and try again

Check to see if you have the program Pando Media Booster installed, if so, uninstall it and try again.

i just unistalled pando media booster but still comes up with internet connection not detected please reconnect and try again

Could you run this for me?
http://netalyzr.icsi.berkeley.edu/

If you're using an older version of the downloader, you may have to grab the new one from here, https://signup.leagueoflegends.com/i...?url=/download

Also, Pando Media Booster is part of the new downloader, so uninstalling probably won't help.