Have you ever been in my situation where you had to reinstall WoW or wanted to play WoW but either way you dont have any cds? Well this is all you need to play:
1. An alternate email address i reccomend hotmail (because it's simple).
2. A paid for account.
If you have both of these follow these steps:
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1. Go to https://www.worldofwarcraft.com/login/login?service=https%3A%2F%2Fwww.worldofwarcraft.com%2Faccount%2Findex.html
2. Go to recruit a friend section of your account management and send a free pass to your alternate email.
3. Check your alternate email for the trial mail from blizzard it will have a trial client for WoW.
4.Download the client with the download manager (this will take hours and hours)
5. Install WoW (this shouldnt take more then 45 minutes tops and it should bring you straight to 1.11)
6. Choose play World of Warcraft (or you can create another trial account)
7. Log onto your account and then download 1.12 and you can play.
8. If and when the trial client expires (I'm not sure if it does) simply make a new email address then rinse and repeat.