Sound icon missing from taskbar

1. Back up the Registry by creating a restore point. 


2. Go to Start > Run (or Windows-key + R), type in regedit and hit OK. 


3. Navigate to the key HKEY_CURRENT_USER\Software\Cla sses\Local Settings\Software\Microsoft\Wi ndows\CurrentVersion \TrayNotify


4. Delete the values IconStreams and PastIconsStream


5. Open up the Task Manager (Ctrl + Shift + Esc), go to the Processes tab, select explorer.exe and click End Process. 


6. Open the Applications tab and click New Task at the bottom-right of the window. 


7. In the message box that pops up type in explorer.exe and hit OK. 


8. Explorer.exe will reload, and the missing icons should now be back in the system-tray where they belong. 


9. Then if the volume bar isnt there, go to taskbar properties (where the volume was gray) and simply tick the box. 


source: http://en.kioskea.net/forum/affich-31257-how-to-recover-lost-missing-system-tray-icon

CD/DVD drive not working - error message in Device Manager

Error message: Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged (code 19)- CD ROM Device Manager Error




These instructions works for XP, Vista, 7


1. Click Start.
2. Click Run.
3. In the "Open" field type REGEDIT.
4. Click OK


5. Go to:
HKEY_LOCAL_MACHINE\ System \ CurrentControlSet \ Control \ Class 


6. In the left hand window pane click on {4D36E965-E325-11CE-BFC1-08002BE10318} to select that key. 


*** if there are multiple keys that start with  {4D36E965-E325-11CE-BFC1-08002BE10318}  Select the first one.


7. Delete: UpperFilter and LowerFilter


8. Reboot




source: http://www.techsupportforum.com/forums/f149/solved-information-in-the-registry-is-incomplete-or-damaged-code-19-a-404794.html