corkyg, Thanks for the reply. I'm going to give that a try. I wasn't sure if I would be dong some kind of damage to the new system or the data on the old HDD. If I do a clean install, that would remove all my old data files with the 'format' that is done during the install and I don't want to do that.
This is very interesting as I didn't think a HDD with an installed operating system was ever system dependent? just like how I'd change spare drives, change ram, upgrade video card, and I never had a problem with bsod or anything. Why would it be different for just taking the harddrive out of an older computer and slapping it into a new one without any existing drive?
it is system specific, or to be more exact, its based on the driver that is used in the controller for the hard drive.
Most systems have ide or sata set in legacy mode, which primary use the same driver.
if you move the hard drive to a new system that uses a different controller and a different driver is needed then you would get a BSOD with a 7b stop code