What version of Media Direct?  Dell's advice on installing Media Direct 3.0 or 3.3 is here:  How to Install Media Direct.  I get the impression on reading the guide that you must begin with a totally blank hard drive, which means deleting all files and partitions.
I have a DELL Inspiron 1525 that crashed.  I used the DELL Media Direct CD to partition the hard drive, then tried to reinstall Vista.  When it got to the last step "completeing installation", it canceled out saying that windows can not configure the boot setup.  I tried this process again, and got the same thing.  Is there something maybe wrong with my reinstall disc?  Or is my hard drive just fried?  Any help would be greatly appreciated.
Windows Vista Reinstall