Thank you for your answer. However, I did explain that I put the old hard drive back in the old Pc and it would not boot up. I did not try to use it as the main drive in my new PC.
Hi there. I took out the main Hard drive (C: from my older PC and connected it to my new PC. It did not open but was seen in DISK MANAGEMENT.
I then realised that it would not open because it had previously been assigned the letter C:. So there was a conflict between the old C: hard drive and...