[Bug] UnityHub Collection of bugs

When I double click Unity Hub.exe, various process are created(before was 3, but now 5), and one of those eaten of 99% my processor. So, I can't open anything in my computer. The UnityHub open and I get error that say I don't have internet connection. I trying to download an Unity version (The last) and when I click in "Done", nothing happens (???) (I've tried VERY MUCH times). When I open Unity without Unity Hub all is well, but if I open Unity Hub, my CPU die. I love Unity and hope you be able to fix it someday

PS: Sorry for the English not well