A:Answer Thanks for reaching out. You are able to add your old HDD to this PC if you want to. As long as you do not format the HDD, the old files should still be on there. If you purchase Microsoft Office, in most cases, it should be a one-time payment. If you have any further questions or concerns then please do not hesitate to give our tech support agents a call for any assistance; we're always happy to help.
Tech support:
(888)937-5582
-CyberpowerPC Support