Dvd drive missing

Question

I am using HP pavilion dv6000 PC notebook and operating sytem is widows vista (32 bit) . After upgrading to service pack 2 my dvd drive got disappeared and i tried all possible solutions but could not resolve the issue.
Please help in this matter
sourabh

Answer 1

What is included in "all possible solutions"? Did you try the upper and lower registry filter repair?
=== Deleting UpperFilter and LowerFilter Registry Keys ===
1. Click Start and click Run.
2. In the Open box, type regedit and click OK.
3. Click the plus (+) sign beside HKEY_LOCAL_MACHINE.
4. Click the plus (+) sign beside System.
5. Click the plus (+) sign beside Current Control Set.
6. Click the plus (+) sign beside Control.
7. Click the plus (+) sign beside Class.
8. Locate the {4d36e965-e325-11ce-bfc1-08002be10318} key and click it.
9. On the File menu, click Export.
10. In the File name box, type savedkey and click Save. It is better
to save the "savedkey" to the desktop.
11. Click the REG_MULTI_SZ data type UpperFilters (found in right
window pane) and then click Delete on the Edit menu.
12. When you are prompted to confirm the deletion, click Yes.
NOTE: If this data type is missing, continue to the next
method.
13. Click the REG_MULTI_SZ data type LowerFilters (found in right
window pane) and click Delete on the Edit menu.
14. When you are prompted to confirm the deletion, click Yes.
15. Quit the Registry Editor and restart the computer.