Refer to these guys and run through their checklist.
Atola hard drive capacity checklist.
they provide a program, which should do the trick:
http://hdd-tools.com/products/cr/download/crsetup.exe
However, it is not likely to work over the USB. You need a "proper" SATA connection.
Make sure you start with a drive that does not contain any useful information, just for the case.
Keep in mind that if there is a motherboard incompatibility, you will not be able to use the same machine to determine if the drive is restored to its capacity. If it is the motherboard which causes this (for some bizzare reason), then it will most likely revert the drive back to 32MB immediately upon restart. Also, consider checking the BIOS settings to see if you can find something related to SATA port modes.
It is unlikely you would need any sort of data recovery. I expect that once you restore the capacity, the drives would be readily readable again.