Reusing a Hard Drive

[samjsamjf5]

So my situation is I am going to build a new PC using an old hard drive from my previous build, the new build having pretty much all new components other than the hard drive, and everything I look up on the topic, the people already have a fresh hard drive when they are installing the old one, but is it possible to use only that old hard drive for a new build? Can i still just download some drivers in and call it good?

 

[USAFRet]

Can i still just download some drivers in and call it good?

Short answer:
No

Long answer:
What OS?
Where did it come from?
What are the old parts?
What are the new parts?

Prepare for a full OS reinstall.
And, assuming Win 10:
For the OS activation, read and do this before you change any parts:
https://support.microsoft.com/en-us/help/20530/windows-10-reactivating-after-hardware-change
http://www.tomshardware.com/forum/id-3164428/windows-build-1607-activation.html