Problem with TBC Update

[killformoney]

Hello there guys . I need a little help with the TBC Update to 2.0.3 . When i try to update , at 50 % this error appears

Blizzard Updater was unable to read the file "C:\Games\World of Warcraft\Data\expansion.MPQ". This error may be caused by problems with the media or drive at C:\--for example, a scratched or dirty CD-ROM/DVD-ROM, hard drive corruption, or a networking problem while downloading the update. (The data being read was "World\Maps\Expansion01\Expansion01_24_35.adt", and the error code was 4.) If this problem persists, you may be able to solve it by uninstalling and then reinstalling the game. If you are unable to correct this problem, please contact Blizzard Technical Support. (Converter::Load)
To check this installation for problems, click the "Repair" button. The Repair tool can automatically fix many update errors.

I've used the "Repair" function but the error still appears .... i've even reinstalled the game and nothing . What i must do ? :schmoll:

[MentaL]

[steve420]

try searching it up on google or blizzards site