RIS problems with Opitplex GX520

Our company recently received 12 new Optiplex GX520's and I am trying to image one to set the other 11 up. The image creates ok by using RIPREP.EXE but when I try to copy it to one of the other Optiplex GX 520's it gets to the end and says that the hardware in the image doesn't match the computers hardware, press 'C' to continue or F3 to qut. I push C to continue and when the PC reboots it says that there is a missing or corrupt file C:\Windows\System32\ . I have tried the OEM drivers solution on MS's website and that hasn't help me out any. The NIC in the PC's that I'm trying to image are Broadcom 57XX and I have downloaded the most recent drivers right off the broadcom site. Does anyone have any ideas as to why these PC's won't image properly. I haven't had any problems like this before with Dell PC's and we've done this with a lot of them.

 

I appreciate any help anyone can offer.