I had some trouble after an Windows Update and I had to reset my PC. I did it with keeping my personal files but it did delete most programs. But most games were installed on other drives so those did not get deleted.
But steam does not see these games any more and deleting them en re-downloading would take a day or two I think.
Is there a way I can tell Steam where does games are? I have a very similar problem with QTorrent, I have multiple donwloaded torrent and was wondering if I could make them auto detect without having to find the torrent info.