Product Firefox Version 34.0.5 Release Channel release OS Windows NT These programs were flagged in your crash reports; api-ms-win-downlevel-advapi32-l2-1-0.dll = Microsoft ---------------- 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