I just got WoW and it's installed in the computer. I've made an account and everything. When I click on the game it comes up with the login screen as it should but it needed an update. I updated it and then it said WoW needed to be restarted. Alright so I restart it. Once it goes through the stuff it comes up with an window saying WoW couldnt be restarted. I can't play the game without it being restarted. Does anyone know how I can avoid the update/restarting.

Try and repair WoW

As its an online game, so in my knowledge these kind of problems arise when the game is cracked i.e. N0t original. If u already have bought the original one then sorry i can't help u...

Umm I'm not completely sure but here's a few things you could try.

Go into your WoW folder and run a repair.
I think there is an auto patcher or updater tool in your folder that might update it properly.
Make sure no anti Virus or firewalls are making it mess up.
Maybe right-click WoW and run as admin.

If it continues I'd ring Blizzard customer support.