Hello Søttø!
Sorry to hear you’re having issues launching WoW… I have a couple things in mind it might be (you may be in need of a Windows Update, or you may need to adjust DirectX settings), but if you can post a system report, that should make it clearer.
You can include the DXDIAG in a reply to the forum post. Place it between rows of ticks (`) for formatting:
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Like this.
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