Since Pinnacle doesn't seem to have anything to do with disk drives, I think it's just coincidence.
Things to check:
1. Device Manager. Any exclamation marks?
2. Does the BIOS see the drive?
3. Can you still boot from that drive?
Kees
I just finished installing pinnacle studio 10 and after rebooting, my pc can no more find the DVD/CD drive.

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