Black Screen + Rotating Blue Circle

[Talatra]

I finally got internet back at my house, had downloaded the client at my younger brothers house with no issue, but now when I downloaded and launched from my personal computer all I get is a black screen, a distorted screen resolution and a rotation blue circle. I've searched around for a solution but have yet to find one. I'd rather not try to redownload the whole thing if I can help it since I'd rather not wait around another 5-8 hours for it to download. (if a redownload is required would it be possible to transfer the files from my bros comp with a flashdrive?) Please let me know whats up. Also deleteing WTF folder is not a solution.

Please and Thank You!
-Tal

[AverageJoe]

Try the solution posted here. Copy/paste that text into your config.wtf file under your World of Warcraft Classic\WTF folder.