'''<u>Please note</u>''': ALL CAPS denotes yelling. Please refrain from using all caps when posting in forums. Thanks. To find your Firefox version when posting a question, Help > About Mozilla Firefox. '''''"I HAD FIREFOX ON THE COMPUTER AND IT WORKED, I THEN DELETED FIREFOX AND RE-INSTALLED, NOW IT DOES NOT EVEN OPEN..."''''' Why did you delete your installation of Firefox if it was working? Just curious. '''''"To help us diagnose and fix the problem, you can send us a crash report."''''' Please see the following about how to include your crash Report IDs in a response to this message. Note: include only the report IDs or the link (right-click on the Report ID, click Copy link location, paste in your reply)<br /> * Example link: http://crash-stats.mozilla.com/report/index/bp-f54ac636-28bf-4cdf-9a3c-cca122100523<br /> * Example Report ID: bp-f54ac636-28bf-4cdf-9a3c-cca122100523<br /> '''See''': http://support.mozilla.com/en-US/kb/Firefox+crashes Also see: * http://support.mozilla.com/en-US/kb/Firefox+crashes+when+you+open+it * http://support.mozilla.com/en-US/kb/Firefox+will+not+start * http://kb.mozillazine.org/Browser_will_not_start_up * http://support.mozilla.com/en-US/kb/Firefox+crashes+when+loading+certain+pages

I inadvertantly deleted it and now have re-installed but wont even start, just nothing happens.

Please read the rest of my post. Post your crash Report IDs and/or follow suggestions in the articles listed. The crash report that you submitted has gone to Bugzilla for investigation. To attempt to help you, we will need the Report IDs to locate your submission to Bugzilla.