If your PC died without giving you a chance to Deactivate, you will be in one of these situations:
1) You haven't used all your 6 activations, so you simply reinstall and activate.
2) You have used all your activations, but the last one was obtained more than 90 days ago. Same as above, just reinstall and reactivate.
3) You have used all your activation AND the last one was obtained LESS than 90 days ago. Just email support, and we'll reactivate you manually.