Hello mwfurrer, can you open firefox and paste the crash Report ID ? , if yes see how to do that : [https://support.mozilla.org/en-US/kb/firefox-crashes-troubleshoot-prevent-and-get-help#w_get-help-fixing-this-crash Get help fixing this crash] if you '''can not open''' firefox, even in safe mode (holding down the shift key while starting Firefox) then see: [https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware#os=win7&browser=fx18 Troubleshoot Firefox issues caused by malware] and also check with : http://www.microsoft.com/security/scanner/en-us/default.aspx http://www.kaspersky.com/security-scan thank you