NEC NR-7900A problems

[Guest]

I have a Dimension 4500 with NEC NR-7900A CD ROM driver. It works sometimes,
but most of the time it doesn't detect that I have put a CD in the drive.
Any ideas? I would really appreciate any help you might have.

 

[Guest]

Locate and click the following registry key:
HKEY_CURRENT_USER\Software\Microsoft\Protected Storage System Provider On the
Edit menu, click Permissions . Click the registry key for the user that is
currently logged on and ensure that Read and Full Control are both set to
Allow . Click the Advanced button, ensure that the user that is currently
logged on is selected, that Full Control is listed in the Permissions column,
and that This Key and Subkeys is listed in the Apply to column. Click to
select the Replace permission entries on all child objects with entries shown
here that apply to child objects check box. Click Apply , and then click Yes
when you receive a prompt to continue. Click OK , and then click OK again