I install Vista Ultimate on one PC. It is an HP Pavilion a1700n I remove the 40 GB IDE HD from the HP PC and put it into a Compaq EVO 510 PC. Result: Vista does not boot. I have researched the subject but still have not found a solution. The microsoft vista deployment step by step seems awfully complex. Has anyone found a simple way to solve this problem? I have also tried the reverse (from compaq to HP PC): Same result! With XP I could boot into safe mode or just boot normally and XP would detect and install the new hardware it finds. Somtimes I would need to install XP from CD on the target PC to copy the boot.ini and hall.dll files to a usb flash drive. Then I would restore the image of XP on the target PC. I would boot into recovery console and copy the files form the flash drive to the target PC (boot.ini to C:\ and hal.dll to C;\windows\system32). Most times I could then boot the target PC normally or in safe mode. However, with Vista I am stymied! Any practical solution? Chris http://drpcdr.ca The NOSPIN Group has added a new feature on our website, web based bulletinboard for questions and answers: Visit our sister website at http://nospin.com