Re: Adding SATA hard drive into computer that doesn't have any.
Windows assumes that you are not changing the motherboard on it, which is exactly what you have done.
Sometimes you can recover from this, other times not. In your case, you have one Windows installation which will at least boot into Safe mode, which is one we can work with.
Boot into Safe mode, then (under and administrator login) go to Control Panel, select System Properties and then hit the Devices tab. You need to remove any drivers that are specific to the old motherboard, and especially the hard drive drivers. When you are in Safe mode, the system is runnign on gneric drivers anyway, so it shouldn't be too difficult.
It may be a good idea to remove your video card specific drivers if the new machine is using a different video card (or in-built graphics).
Now would be a good time to scan for any malware, while you're at it.
Once you are done, reboot the machine, let Windows start normally, then it will start installing drivers for everything under the sun, including drivers for the motherboard that you are currently running from. If you have an internet connection readily available, you might download the latest/greatest drivers beforehand and install them manually. Depending on how long ago it was since you used these drives, you may have some serious catching-up to do with System Update.
Civility, Substance, Subtlety, Style: Success