Vista killing my DVD/CD drives???

What's up?

I downloaded the newest build for Vista 2 days ago and installed it on a
test laptop that I have. I was wanting to check out the Bitlocker feature so
after getting it up and running I decided to start over and partition the
drives the right way ahead of time.

I went to reload Vista and got an error during the Copying files portion of
the install. No problem I thought, just cut it off and start over and see
what happens. Well when the PC booted back up, it didnt see the Vista DVD in
the drive and of course since I had formatted the hard drive, it did have
anything to boot. So, after a while of playing with it, I put the original
hard drive back in the laptop and booted it up with Windows XP. XP shows the
DVD/CD drive but wont recognize any CD or DVD. So I took another DVD/CD
drive out of a similiar computer and it worked fine. I then continued to
load Vista. Got the same thing and the same issue again. Even tried yet
another DVD/CD drive and now none of them will recognize any disks whether it
be on boot up or in XP...

Any ideas???
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Thanks for your help!
Ben