Start Firefox in Safe Mode by Holding down the SHIFT key while starting Firefox. Check and tell if its working.

If you have no Titlebar, Menu Bar or Toolbars, you may be in Full Screen Mode. Tap the F11 key to toggle Full Screen Mode on or off. Also, if you are in Full Screen Mode, moving your cursor to the top edge of the monitor display will cause the toolbars to "slide" down; while the toolbars are down you can right-click in the empty space at the end of the tab bar and click "Exit Full Screen Mode". *http://kb.mozillazine.org/Netbooks#Full_screen To turn toolbars on or off see the following. The checked items will be displayed. Click on an item to check or un-check it. *https://support.mozilla.com/en-US/kb/Back%20and%20forward%20or%20other%20toolbar%20items%20are%20missing -------------------------------- You are using Firefox 4.0.1 which is no longer supported. Firefox 5.0 is a security and stability update for Firefox 4.0.1. <u>A few add-ons are still not working with Firefox 5.0 because the third-party developers of the add-ons have not updated their products.</u> *Updating Firefox: https://support.mozilla.com/en-US/kb/Updating+Firefox?bl=n&s=update%20automatically *Or you can download, SAVE the installer, close Firefox, then run the installer **Download Firefox 5.0: http://www.mozilla.com/en-US/firefox/all.html *Also, to protect your personal information (bookmarks, passwords, etc.), see: https://support.mozilla.com/en-US/kb/Backing+up+your+information <br /> -------------------------- <br /> '''You need to update the following.''' The Plugin version(s) shown below was/were submitted with your question and is/are out of date. You should update to avoid known security issues with the version(s) you have installed. Click on "More system info..." to the right of your question to see what was included with your question. *Adobe PDF Plug-In For Firefox and Netscape *Shockwave Flash 10.0 r32 #'''''Check your plugin versions''''' on either of the following links': #*http://www.mozilla.com/en-US/plugincheck/ #*https://www-trunk.stage.mozilla.com/en-US/plugincheck/ #*'''Note: plugin check page does not have information on all plugin versions''' #*There are plugin specific testing links available from this page: #**http://kb.mozillazine.org/Testing_plugins #'''Update Adobe Reader (PDF plugin):''' #*From within your existing Adobe Reader ('''<u>if you have it already installed</u>'''): #**Open the Adobe Reader program from your Programs list #**Click Help > Check for Updates #**Follow the prompts for updating #**If this method works for you, skip the "Download complete installer" section below and proceed to "After the installation" below #*Download complete installer ('''if you do <u>NOT</u> have Adobe Reader installed'''): #**SAVE the installer to your hard drive (save to your Desktop so that you can find it after the download). Exit/Close Firefox. Run the installer you just downloaded. #**Use either of the links below: #***https://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox ''(click on "Installing and updating Adobe Reader")'' #***''<u>Also see Download link</u>''': http://get.adobe.com/reader/otherversions/ #*After the installation, start Firefox and check your version again. #'''Update the [[Managing the Flash plugin|Flash]] plugin''' to the latest version. #*Download and SAVE to your Desktop so you can find the installer later #*If you do not have the current version, click on the "Player Download Center" link on the "'''Download and information'''" or "'''Download Manual installers'''" below #*After download is complete, exit Firefox #*Click on the installer you just downloaded and install #**Windows 7 and Vista: may need to right-click the installer and choose "Run as Administrator" #*Start Firefox and check your version again or test the installation by going back to the download link below #*'''Download and information''': http://www.adobe.com/software/flash/about/ #**Use Firefox to go to the above site to update the Firefox plugin (will also install plugin for most other browsers; except IE) #**Use IE to go to the above site to update the IE ActiveX #*'''Download Manual installers'''. #**http://kb2.adobe.com/cps/191/tn_19166.html#main_ManualInstaller #**Note separate links for: #***Plugin for Firefox and most other browsers #***ActiveX for IE