Hi
Thank you for using Microsoft Windows Vista Forums.
I will require some additional information to assist you better.
Ø When exactly are you getting this error message?
Ø Have any changes been made to your computer recently?
In the mean time, follow the instructions below which might help you in resolving the issue.
If your removable media shows up with a drive letter named C:\ or any other existing drive letters, you need to change its drive letter.
1. Click on start.
2. Type in "Computer Management" in the search box.
3. Click on Computer Management.
4. Click Continue to proceed.
5. In the Computer Management window, click Disk Management under Storage option.
6. You will find all the storage devices connected to your PC here.
7. To change the drive letter, right-click on the connected removable media and click the option Change Drive Letter and Paths...
8. This would take you to a different box. Click on Change.
9. Select the drive letter you want to assign from the drop down.
10. To confirm, click OK.
11. Click Yes. Check if the issue is resolved.
Please post back and let us know if this has helped to resolve your issue.
Regards,
KarthiK TP