Your post is very confusing. Is the problem a DVD drive that is not being
recognized? If so, this this has nothing to do with USB issues. The drive
letter of an optical drive will not normally change when USB mass storage
devices are connected or disconnected.

To troubleshoot hardware issues you need to follow a logical series of
steps. Start with these.
Is the DVD drive recognized by the BIOS? If not there is a hardware
failure and it needs to be replaced.
If yes, is it recognized in Device Manager in Windows? Any problem shown.
If Device Manger shows it with no issues, is it visible in Computer
Management?
--

"Katies" <guest@unknown-email.com> wrote in message
news:78b56d6b8919eb5cf5dd89dde02bae28@nntp-gateway.com...[color=blue]
>
> Hi there,
>
> My DVD player has been working on and off for about a year now. I've
> finally decided to sort it out, and have done the following but no luck:
>
> 1. Deleted upper/lower filters
> 2. Uninstalled/reinstalled drivers
> 3. Renamed drive letters in Computer Management (as suggested by
> Microsoft)
>
> Having looked round a number of forums, they seem to suggest Vista has
> a specific problem renaming drives when new USBs/dongles/hard drives are
> used on the machine, which results in DVD player problems and 'no disk'
> errors.
>
> For instance, other people have had DVD recognition problems when
> installing new hard drives, or using USBs to transfer music files.
>
> From the forums, the answer seems to be renaming drives in the *memory
> card readers *also, so that windows knows where to go for stuff.
>
> But I don't know how exactly to do this, what to rename and how, and
> whether this works when you're using 2 USBs and a dongle.
>
> Help?!
>
> :huh:
>
>
> --
> Katies[/color]