2013 Archives

[basalt]

I have an Aspire 5750-6421, Windows 7 premium with cd-dvd reader/burner. The dvd player quit recognizing DVDs. Based on some forum suggestions, I reset to a much earlier restore point and it worked fine. Just did a Micrrosoft update and it quit again. Restored to an earler point once more and now it works. What in the Microsoft updates is killing my DVD player on my machine? Is there a driver update that can prevent this?

[Sharanji]

hi...

The windows update may be changes the infroamtion in system registry.

You need to check for error messages in device manager.

You may need to  remove the upper and lower filters from the registry to resolve the issue.

1. Click Start and then click All Programs.
2. Click Accessories, and then click Run.
3. Type regedit, and then click OK.
   If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
4. In the navigation pane, locate and then click the following registry subkey:
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
5. In the right pane, click UpperFilters.
   
   Note You may also see an UpperFilters.bak registry entry. You do not have to remove that entry. Click UpperFilters only. If you do not see the UpperFilters registry entry, you still might have to remove the LowerFilters registry entry. To do this, go to step 8.
6. On the Edit menu, click Delete.
7. When you are prompted to confirm the deletion, click Yes.
8. In the right pane, click LowerFilters.
   Note If you do not see the LowerFilters registry entry, you may save chages and exit registry.
9. On the Edit menu, click Delete.
10. When you are prompted to confirm the deletion, click Yes.
11. Exit Registry Editor.
12. Restart the computer.

[padgett]

My experience has been the the "filters" were not there. What I have needed was a registry entry like this:

go to  HKLM\System\CurrentControlSet\Services\atapi\Controller0 (may need to add Controller0). Add the key EnumDevice1 with a DWORD value of 1.

I have had this happen on quite a few machines with internal CD/DVDs that are recognised by the BIOS but not the OS & have been there again after a reboot.