Issue deploying Windows 7x64 to Opiptlex 980 using MDT2010

We're having na issue deploying WIndows 7 x64 to Optiplex 980s using MDT 2010. Whether custom wim or stock wim, it takes hours for the extracting files stage to complete. Some people said online that the A02 BIOS update fixed the problem for them but it did not for us.

Are there any known issues with the 980 and MDT and/or Windows 7?