Since downloading Firefox 5.0, my CD drive no longer works can you tell me why? why ?

Question

The drive is listed in my computer but I can't open it. The Auto Play function doesn't open it when a disk is inserted.
When I look in the control panel/device manager and click on the
listed device it tells me that the device is working properly. I can't read or write to it however. I have a Dell computer with a SONY DV+-RW Aw -Q160s SCSi CdRom Device. Running Windows Vista

Answer 1

It seems your Mozilla installation is broken. Try the following steps to fully uninstall Mozilla Firefox:
1. Uninstall Firefox as you would normally do.
2. Open a command prompt as administrator.
3. By using the cd and rd command, remove Firefox AppData and Roaming folders, for example:
C:\Users\USERNAME> cd AppData
C:\Users\USERNAME\AppData> cd Local
C:\Users\USERNAME\AppData\Local> cd Mozilla
C:\Users\USERNAME\AppData\Local\Mozilla> rd /s Firefox
C:\Users\USERNAME\AppData\Local\Mozilla\*.* - Are you sure? (y/n) y
C:\Users\USERNAME\AppData\Local\Mozilla> cd ..
C:\Users\USERNAME\AppData\Local> cd ..
C:\Users\USERNAME\AppData\> cd Roaming
C:\Users\USERNAME\AppData\Roaming> cd Mozilla
C:\Users\USERNAME\AppData\Roaming\Mozilla> rd /s Firefox
C:\Users\USERNAME\AppData\Roaming\Mozilla\*.* - Are you sure (y/n) y
C:\Users\USERNAME\AppData\Roaming\Mozilla > exit
Remember to press Enter each time.
4. After that, open a hard disk clean-up tool (such as CCleaner or Windows built-in) and remove all temporary files from your computer.
5. Restart your computer. Download '''again''' the Firefox package from [http://www.mozilla.org/es-ES/download/?product=firefox-14.0.1&os=win&lang=es-ES Mozilla official servers] and try to install Firefox. If the problem persists maybe your computer has a problem or is infected with viruses.
About the Scrapbook add-on, I could get it to work. It has no icon when docked to the toolbar, but you can anyway open it. Right-click a button on the toolbar, click Customize... find the Scrapbook icon, drag it to the bookmarks bar so you can see the icon and click on it to open it. Whenever you need to save a page, right-click that page and choose Save page.