When opening Steam's .exe or shortcut, it tries to connect to Steam, but after 20-30 seconds, Steam opens two windows with the same message connecting to Steam, but not responding.
After using the page "Steam fails to start" (https://support.steampowered.com/kb_article.php?ref=3352-RYON-4107), I discovered that Steam runs on the computer processes, but "Not Responding" in the tab "Applications" of the Task Manager (I also looked at the processes tab to confirm it).
After doing a full scan by computer scans for infected files and test run Steam with all modules of Avast! turned off, Steam still opens two windows which are not responding.
What do I do to run Steam normally again?
I DID posted this on Steam Support but it haven't been answered for WEEKS, i need some help at this tho, i really want to play TF2 :/
My wife has had that problem a few times before... and I think maybe I had it once, too. I have no idea what causes it. My guess is that updates occasionally get corrupted somehow...
Uninstalling and then reinstalling does seem to fix it, though.
Uninstalling will (for some reason!?) delete all of your games, so.... If you don't want to re-download all your games again then move them out of the steam folder before you uninstall. Put them back in after installing it. Steam will verify the files again and say it is "downloading" but it will go much faster than if you actually downloaded them again. Despite what it says it's not actually downloading anything, it's just verifying each file.
This process may still take quite a while, and quite a long time if you have a lot of games... So be prepared to let it run for a while.