Hi Mansur, unfortunately the image didn't come through. You can attach it to a reply: https://support.mozilla.org/questions/1140618#question-reply

this is the picture

i have noticed another thing , i have open different web page on different tab , when i have the problem on a tab 1 i just click on another tab and re click on tab 1 and it appears normally.

Wow, that's a special effect! This could be a new incompatibility with your graphics card/chipset driver software. Could you try disabling Firefox from using hardware acceleration? Here's how:

"3-bar" menu button (or Tools menu) > Options

In the left column, click Advanced. On the right side, with the "General" mini-tab active, uncheck the box for "Use hardware acceleration when available".

This takes effect the next time you exit Firefox and start it up again. Any difference?

Since hardware acceleration improves the appearance of fonts and animations, you may want to check whether graphics card/chipset driver updates are available for your system. This article suggests safe ways to do that: Upgrade your graphics drivers to use hardware acceleration and WebGL.

hello, could you go to the firefox menu ≡ > help ? > troubleshooting information, copy the contents of that page and paste them here into a reply on the forum? thank you

Application Basics

Name: Firefox Version: 49.0.1 Build ID: 20160922113459 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0 OS: Windows_NT 6.1 Multiprocess Windows: 1/1 (Enabled by default) Safe Mode: false

Crash Reports for the Last 3 Days

All Crash Reports

Extensions

Name: Multi-process staged rollout Version: 1.3 Enabled: true ID: e10srollout@mozilla.org

Name: Pocket Version: 1.0.4 Enabled: true ID: firefox@getpocket.com

Name: Web Compat Version: 1.0 Enabled: true ID: webcompat@mozilla.org

Name: Avast Online Security Version: 12.0.88 Enabled: false ID: wrc@avast.com

Name: Avast SafePrice Version: 10.3.5.39 Enabled: false ID: sp@avast.com

Graphics

Features Compositing: Basic Asynchronous Pan/Zoom: wheel input enabled WebGL Renderer: Google Inc. -- ANGLE (Mobile Intel(R) 965 Express Chipset Family (Microsoft Corporation - WDDM 1.1) Direct3D9Ex vs_3_0 ps_3_0) Hardware H264 Decoding: No; Hardware video decoding disabled or blacklisted Direct2D: Blocked for your graphics driver version. Try updating your graphics driver to version 8.1500.1000.1930 or newer. DirectWrite: false (6.1.7601.17514) GPU #1 Active: Yes Description: Mobile Intel(R) 965 Express Chipset Family (Microsoft Corporation - WDDM 1.1) Vendor ID: 0x8086 Device ID: 0x2a02 Driver Version: 8.15.10.1749 Driver Date: 5-6-2009 Drivers: igdumd64 igd10umd64 Subsys ID: 022f1028 RAM: Unknown

Diagnostics AzureCanvasAccelerated: 0 AzureCanvasBackend: skia AzureContentBackend: cairo AzureFallbackCanvasBackend: cairo Decision Log HW_COMPOSITING: disabled by user: Disabled by pref D3D11_COMPOSITING: unavailable by default: Hardware compositing is disabled D3D9_COMPOSITING: unavailable by default: Hardware compositing is disabled DIRECT2D: unavailable by default: Direct2D requires Direct3D 11 compositing D3D11_HW_ANGLE: unavailable by default: D3D11 compositing is disabled disabled by env: D3D11 compositing is disabled

Important Modified Preferences

browser.cache.disk.capacity: 358400 browser.cache.disk.filesystem_reported: 1 browser.cache.disk.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false browser.cache.frecency_experiment: 3 browser.download.importedFromSqlite: true browser.places.smartBookmarksVersion: 8 browser.sessionstore.upgradeBackup.latestBuildID: 20160922113459 browser.startup.homepage_override.buildID: 20160922113459 browser.startup.homepage_override.mstone: 49.0.1 browser.tabs.remote.autostart.2: true browser.urlbar.daysBeforeHidingSuggestionsPrompt: 1 browser.urlbar.lastSuggestionsPromptDate: 20160927 dom.apps.lastUpdate.buildID: 20160922113459 dom.apps.lastUpdate.mstone: 49.0.1 dom.apps.reset-permissions: true extensions.lastAppVersion: 49.0.1 gfx.blacklist.direct2d: 3 gfx.blacklist.direct2d.failureid: FEATURE_FAILURE_DL_BLACKLIST_g984 gfx.crash-guard.d3d11layers.appVersion: 49.0.1 gfx.crash-guard.d3d11layers.deviceID: 0x2a02 gfx.crash-guard.d3d11layers.driverVersion: 8.15.10.1749 gfx.crash-guard.d3d11layers.feature-d2d: false gfx.crash-guard.d3d11layers.feature-d3d11: false gfx.crash-guard.status.d3d11layers: 2 gfx.direct2d.disabled: true layers.acceleration.disabled: true media.gmp-eme-adobe.abi: x86-msvc-x64 media.gmp-eme-adobe.lastUpdate: 1474806741 media.gmp-eme-adobe.version: 17 media.gmp-gmpopenh264.abi: x86-msvc-x64 media.gmp-gmpopenh264.lastUpdate: 1474806743 media.gmp-gmpopenh264.version: 1.6 media.gmp-manager.buildID: 20160922113459 media.gmp-manager.lastCheck: 1474946898 media.gmp-widevinecdm.abi: x86-msvc-x64 media.gmp-widevinecdm.lastUpdate: 1474946917 media.gmp-widevinecdm.version: 1.4.8.903 media.gmp.storage.version.observed: 1 media.hardware-video-decoding.failed: false network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1474861266 places.history.expiration.transient_current_max_pages: 66848 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true privacy.cpd.offlineApps: true privacy.cpd.siteSettings: true privacy.sanitize.timeSpan: 2 storage.vacuum.last.index: 1 storage.vacuum.last.places.sqlite: 1474861266

Important Locked Preferences

Places Database

JavaScript

Incremental GC: true

Accessibility

Activated: false Prevent Accessibility: 0

Library Versions

NSPR Expected minimum version: 4.12 Version in use: 4.12

NSS Expected minimum version: 3.25 Version in use: 3.25

NSSSMIME Expected minimum version: 3.25 Version in use: 3.25

NSSSSL Expected minimum version: 3.25 Version in use: 3.25

NSSUTIL Expected minimum version: 3.25 Version in use: 3.25

Experimental Features