Hello candacehope143, it is an out-of-memory (OOM) crash, that means Firefox use all available memory and that is the cause of the crash. Try to '''disable graphics hardware acceleration in firefox''' and see if that helps. To do that, copy the next bold '''firefox -preferences''' and paste it in your win 7 run command (if you have NOT enable the "run command" in your win 7, go from : right-click Start Button > Properties > click Customize > in "Customize Start Menu" dialog > Check [v] the box next to "Run Command" > click OK. Now the Run command will be displayed on the right side of the Start menu) Now the Firefox Options window will open (with Firefox closed of course) > click the Advanced tab > then select General > in the settings list, you should find the Use hardware acceleration when available checkbox. '''Uncheck''' this checkbox. Now, restart Firefox and see if the problems persist. If the problem exist again, go for a ''Clean reinstall''. This means you remove Firefox program files and then reinstall Firefox. Please follow these steps: '''Note:''' You might want to print these steps or view them in another browser. #Download the latest Desktop version of Firefox with another browser from [https://www.mozilla.org/firefox/all/ this page] (full installer) and save the setup file to your computer. #Delete the Firefox installation folder, which is located in one of these locations, by default on Windows : *C:\Program Files\Mozilla Firefox *C:\Program Files (x86)\Mozilla Firefox Now, go ahead and reinstall Firefox: #Double-click the downloaded installation file and go through the steps of the installation wizard. #Once the wizard is finished, choose to directly open Firefox after clicking the Finish button. More information about reinstalling Firefox can be found [[Troubleshoot and diagnose Firefox problems#w_5-reinstall-firefox|here]]. <b>WARNING:</b> Do not use a third party uninstaller as part of this process. Doing so could permanently delete your [[Profiles|Firefox profile]] data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. <u>These cannot be easily recovered unless they have been backed up to an external device!</u> See [[Back up and restore information in Firefox profiles]]. <!-- Starting in Firefox 31, the Firefox uninstaller no longer lets you remove user profile data.Ref: Bug 432017 and https://support.mozilla.org/kb/uninstall-firefox-from-your-computer/discuss/5279 [Fx31] Windows uninstaller will no longer offer the option to remove personal data --> Please report back to say if this helped you! Thank you.

The crash report flagged these programs; OPTPROCRASH.DLL = Adware mcbrwctl.dll = McAfee SiteAdvisor oleaut32.dll = Microsoft igd10iumd32.dll = NVIDIA D3D shim drivers = NVIDIA Corporation icudt52.dll = International Components for Unicode --------------------------- Some added toolbar and anti-virus add-ons are known to cause Firefox issues. '''Disable All of them.''' -------------------------- Perform a System File Check to fix corrupted system files http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html See if there are updates for your graphics drive drivers https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration