Can anyone tell me why my games won't reload. Only 5 did out of 37. I just fire up this computer and took it to the computer store

all my games where found . I haven't play anything for a long time. How to start reactivate my steam games. I have the keys and payment

type on these.

Thanks

Priestesse

Take a look here: https://support.steampowered.com/kb_article.php?ref=5168-EUIA-6643