What do you mean about it flashes ? Is it the whole screen, or just the Firefox window?

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options) key, and then starting Firefox. Is the problem still there?

While still in Safe Mode,

Type about:support in the address bar and press Enter. Under the main banner, press the button; Copy Text To Clipboard.. Then in the reply box at the bottom of this page, do a right click in the box and select Paste. This will show us your system details. No Personal Information Is Collected.

Hi thanks

Yes it is still there, by flashes I mean it's not stable like flicker maybe... It's like it is refreshing in low speed! And it get Not responding Thanks

Application Basics

Name: Firefox Version: 45.0 Build ID: 20160303134406 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0 Multiprocess Windows: 0/1 (default: false) Safe Mode: true

Crash Reports for the Last 3 Days

All Crash Reports

Extensions

Name: Firefox Hello Beta Version: 0.1 Enabled: true ID: loop@mozilla.org

Name: 360 Internet Protection Version: 5.0.0.1002 Enabled: false ID: WebProtection@360safe.com

Name: Adobe Acrobat DC - Create PDF Version: 15 Enabled: false ID: web2pdfextension@web2pdf.adobedotcom

Name: Skype Version: 8.0.0.9103 Enabled: false ID: {82AF8DCA-6DE9-405D-BD5E-43525BDAD38A}

Graphics

Adapter Description: Intel(R) HD Graphics 4000 Adapter Drivers: igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32 Adapter RAM: Unknown Asynchronous Pan/Zoom: none Device ID: 0x0166 DirectWrite Enabled: false (10.0.10586.0) Driver Date: 8-17-2015 Driver Version: 10.18.10.4276 GPU #2 Active: false GPU Accelerated Windows: 0/1 Basic (OMTC) Subsys ID: 16c210cf Supports Hardware H264 Decoding: No; Hardware video decoding disabled or blacklisted Vendor ID: 0x8086 windowLayerManagerRemote: true AzureCanvasBackend: skia AzureContentBackend: cairo AzureFallbackCanvasBackend: cairo AzureSkiaAccelerated: 0

Important Modified Preferences

accessibility.browsewithcaret: true 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: 1 browser.download.importedFromSqlite: true browser.places.smartBookmarksVersion: 7 browser.sessionstore.upgradeBackup.latestBuildID: 20160303134406 browser.startup.homepage_override.buildID: 20160303134406 browser.startup.homepage_override.mstone: 45.0 dom.apps.reset-permissions: true dom.mozApps.used: true extensions.lastAppVersion: 45.0 gfx.crash-guard.d3d11layers.appVersion: 45.0 gfx.crash-guard.d3d11layers.deviceID: 0x0166 gfx.crash-guard.d3d11layers.driverVersion: 10.18.10.4276 gfx.crash-guard.d3d11layers.feature-d2d: true gfx.crash-guard.d3d11layers.feature-d3d11: true gfx.crash-guard.glcontext.gfx.driver-init.direct3d11-angle: true gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle: true gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle-force-d3d11: false gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle-force-warp: false gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle-try-d3d11: true gfx.crash-guard.status.d3d11layers: 2 gfx.crash-guard.status.d3d9video: 2 gfx.crash-guard.status.glcontext: 2 gfx.direct3d.last_used_feature_level_idx: 0 media.gmp-eme-adobe.abi: x86-msvc-x64 media.gmp-eme-adobe.lastUpdate: 1457613462 media.gmp-eme-adobe.version: 15 media.gmp-gmpopenh264.abi: x86-msvc-x64 media.gmp-gmpopenh264.lastUpdate: 1457613463 media.gmp-gmpopenh264.version: 1.5.3 media.gmp-manager.buildID: 20160303134406 media.gmp-manager.lastCheck: 1457737112 media.hardware-video-decoding.failed: false network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1457738813 places.history.expiration.transient_current_max_pages: 103707 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true privacy.sanitize.migrateFx3Prefs: true services.sync.declinedEngines: services.sync.engine.prefs.modified: false services.sync.lastPing: 1457700422 services.sync.lastSync: Sat Mar 12 2016 15:39:18 GMT+1100 (AUS Eastern Standard Time) services.sync.numClients: 2 storage.vacuum.last.index: 0 storage.vacuum.last.places.sqlite: 1457738813 ui.osk.debug.keyboardDisplayReason: IKPOS: Touch screen not found.

Important Locked Preferences

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: 3.21.1 Basic ECC Version in use: 3.21.1 Basic ECC

NSSSMIME Expected minimum version: 3.21.1 Basic ECC Version in use: 3.21.1 Basic ECC

NSSSSL Expected minimum version: 3.21.1 Basic ECC Version in use: 3.21.1 Basic ECC

NSSUTIL Expected minimum version: 3.21.1 Version in use: 3.21.1

Experimental Features

As you are on Win 10, you should update the drivers of your Intel CPU, because many graphics bugs with Win 10 have been fixed since 7 months.

What's the model name of your Intel CPU?

Intel(R) Core(TM) i5-3317U CPU @ 1.70GHz 1.70 GHz

Do you mean this?

kshabani said

Intel(R) Core(TM) i5-3317U CPU @ 1.70GHz 1.70 GHz Do you mean this?

Yes, it's fine. I searched on the Intel website and it looks like you have already the latest drivers: https://downloadcenter.intel.com/download/25188/Intel-Graphics-Driver-for-Windows-10-15-33-

Does the issue disappear if you disable HWA? https://support.mozilla.org/en-US/kb/forum-response-disable-hardware-acceleration

OK i deactivated but didn't work.