Hello there, As a Belgian Vision Systems Integrator, we use original OEM CD Windows XP Pro SP2 to drive our specific applications on "home made" computers. As an example: ASUS NCCH-DL motherboard, Dual Intel Xeon 2.8 GHz, 2 GB DDR RAM, Seagate ST3146807LW SCSI HDD controled by Adaptec SCSI 320 adapter (always low level formatted with 16GB partition for Windows), DVD-RAM, Floppy drive. That's all we use until Windows is installed. Now, starting the OEM CD from DVD drive to install Windows XP Pro SP2, and using F6, introducing the floppy for SCSI 320 drive, the system is reading and writing until I recieve the following message: < Software Installation has not passed Windows Logo Testing > : : Surprice ! We use original CD's, and Windows do not recognize his own software ??? Windows advice us to stop installation ! I wonder if someone can explain this "unlogical" decision ? I agree, some periferical hardware do have such situation, like graphics card, and advice to continue, but Windows for Windows... I really will appreciate Your comments and thanks in advance, Jean P.S.: I already asked this question on French Support Microsoft, but NO answer.