Sony amnesia

I have a Sony PCV-RS34G, that refuses to recognize the computer. I put in a new HD 18 months ago, it worked no problem,

I have followed everthing Sony has suggested.

Some companies use a record or chip in the computer to tell the software if it is their product.

I have no problem as I own thr computer and ordered a copy of the install hardware, both registered with Sony. Is not as if I wanted to pirate anything.

If you can help, please do, I need it.

Pauline