Is the desktop board DH57DD compatible with Windows 7 Professional 64-bit and 32-bit editions?
Look at page 11 on "Intel Desktop Board DH57DD Product Guide", which is available at
This product guide indicates that DH57DD supports Windows 7 Home Basic, Windows 7 Home Premium, and Windows 7 Ultimate. However, Windows 7 Professional is missing on the list of Supported Operating Systems there.
On the other hand, look at the compatibility table at
This compatibility table indicates that DH57DD supports Windows 7 in general. This compatibility table does not say anything about particular edition within Windows 7 family.
So, is DH57DD compatible with Windows 7 Professional 64-bit and 32-bit editions or not?