All of your crash reports are linked to a bug report entitled "[Win7] startup crash in _d2d_clear_surface @ CContext::RestorePipelineStateImpl (d3d11.dll, after installing KB2670838) on Asus computers". One of the key changes in Firefox's Safe Mode ([[Troubleshoot Firefox issues using Safe Mode]]) is that Firefox's use of hardware acceleration of graphics is disabled. This feature is sensitive to graphics driver incompatibilities, so it's worth a try doing that in normal mode, if you can keep Firefox running for a minute. orange Firefox button (or Tools menu) > Options > Advanced On the "General" mini-tab, uncheck the box for "Use hardware acceleration when available" If you restart Firefox after that, is the issue resolved (or at least improved)?

Thanks it works now