What is your computer system and Firefox?

Is it just Firefox that has the problem?

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

Start your Computer in safe mode with networking. Then start Firefox. Try Safe web sites. Is the problem still there?

Starting The Computer In Safe Mode;
Free Online Encyclopedia

You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.

• Hold down the Shift key and left-click the Reload button
• Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
• Press "Command + Shift + R" (Mac)

You may have zoomed web page(s) by accident. Reset the page zoom on pages that cause problems.

• View > Zoom > Reset (Ctrl/Command+0 (zero))

• http://kb.mozillazine.org/Zoom_text_of_web_pages

Check that you do not run Firefox in compatibility mode or with reduced screen resolution. You can open the Properties of the Firefox desktop shortcut via the right-click context menu and check the "Compatibility" tab. Make sure that all items are deselected in the "Compatibility" tab of the Properties window.

Isn't just web sites, is all firefox browser.

My OS is win10 and firefox is 40.0.3

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? this might give us a clue what is going on...

Did you check the compatibility tab in Firefox desktop shortcut and possibly the Firefox.exe program as well?

cor-el said

Did you check the compatibility tab in Firefox desktop shortcut and possibly the Firefox.exe program as well?

Yes, all compatibility is fine, I was using Firefox since I bought the pc

philipp said

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? this might give us a clue what is going on...

Application Basics

Name: Firefox Version: 40.0.3 Build ID: 20150826023504 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:40.0) Gecko/20100101 Firefox/40.0 Multiprocess Windows: 0/1 (default: false)

Crash Reports for the Last 3 Days

All Crash Reports

Extensions

Name: AdBlock for Firefox Version: 2.0 Enabled: true ID: jid1-NIfFY2CA8fy1tg@jetpack

Name: Diccionario de Español/México Version: 1.1.3 Enabled: true ID: es-MX@dictionaries.addons.mozilla.org

Name: Hola Better Internet Version: 1.9.603 Enabled: true ID: jid1-4P0kohSJxU1qGg@jetpack

Name: TrafficLight Version: 0.2.23.1-signed Enabled: true ID: trafficlight@bitdefender.com

Name: Bitdefender Wallet Version: 2.0 Enabled: false ID: bdwteff@bitdefender.com

Graphics

Adapter Description: Intel(R) HD Graphics 4600 Adapter Drivers: igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32 Adapter RAM: Unknown Asynchronous Pan/Zoom: none Device ID: 0x0412 Direct2D Enabled: true DirectWrite Enabled: true (10.0.10240.16430) Driver Date: 7-17-2015 Driver Version: 10.18.15.4256 GPU #2 Active: false GPU Accelerated Windows: 1/1 Direct3D 11 (OMTC) Subsys ID: 06221028 Supports Hardware H264 Decoding: true Vendor ID: 0x8086 WebGL Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 4600 Direct3D11 vs_5_0 ps_5_0) windowLayerManagerRemote: true AzureCanvasBackend: direct2d 1.1 AzureContentBackend: direct2d 1.1 AzureFallbackCanvasBackend: cairo AzureSkiaAccelerated: 0

Important Modified Preferences

accessibility.typeaheadfind.flashBar: 0 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: 2 browser.download.importedFromSqlite: true browser.download.manager.alertOnEXEOpen: false browser.places.smartBookmarksVersion: 7 browser.search.useDBForOrder: true browser.sessionstore.upgradeBackup.latestBuildID: 20150826023504 browser.startup.homepage: about:home browser.startup.homepage_override.buildID: 20150826023504 browser.startup.homepage_override.mstone: 40.0.3 browser.tabs.warnOnClose: false dom.apps.reset-permissions: true dom.mozApps.used: true extensions.lastAppVersion: 40.0.3 font.internaluseonly.changed: true font.name.serif.x-western: Calibri gfx.direct3d.last_used_feature_level_idx: 0 media.gmp-eme-adobe.lastUpdate: 1442539664 media.gmp-eme-adobe.trial-create: 1 media.gmp-eme-adobe.version: 13 media.gmp-gmpopenh264.lastUpdate: 1432054742 media.gmp-gmpopenh264.version: 1.4 media.gmp-manager.buildID: 20150826023504 media.gmp-manager.lastCheck: 1442765929 network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1442707249 places.history.expiration.transient_current_max_pages: 104858 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true plugin.state.npmeetingjoinpluginoc: 0 plugin.state.nprcplugin: 0 plugin.state.npspwrap: 0 plugin.state.npvlc: 2 plugin.state.npwlpg: 0 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_bgcolor: false print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_bgimages: false print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_colorspace: print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_command: print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_downloadfonts: false print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_duplex: 1515870810 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_edge_bottom: 0 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_edge_left: 0 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_edge_right: 0 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_edge_top: 0 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_evenpages: true print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_footercenter: print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_footerleft: &PT print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_footerright: &D print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_headercenter: print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_headerleft: &T print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_headerright: &U print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_in_color: true print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_margin_bottom: 0.5

print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_margin_left: 0.5 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_margin_right: 0.5 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_margin_top: 0.5 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_oddpages: true print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_orientation: 0 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_page_delay: 50 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_paper_data: 1 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_paper_height: 11.00 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_paper_name: print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_paper_size_type: 0 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_paper_size_unit: 0 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_paper_width: 8.50 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_plex_name: print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_resolution: 1515870810 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_resolution_name: print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_reversed: false print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_scaling: 1.00 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_shrink_to_fit: true print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_to_file: false print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_unwriteable_margin_bottom: 0 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_unwriteable_margin_left: 0 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_unwriteable_margin_right: 0 print.printer_\\MAMA-PC\HP_Deskjet_F4100_series.print_unwriteable_margin_top: 0 print.printer_Bullzip_PDF_Printer.print_bgcolor: false print.printer_Bullzip_PDF_Printer.print_bgimages: false print.printer_Bullzip_PDF_Printer.print_colorspace: print.printer_Bullzip_PDF_Printer.print_command: print.printer_Bullzip_PDF_Printer.print_downloadfonts: false print.printer_Bullzip_PDF_Printer.print_duplex: 1515870810 print.printer_Bullzip_PDF_Printer.print_edge_bottom: 0 print.printer_Bullzip_PDF_Printer.print_edge_left: 0 print.printer_Bullzip_PDF_Printer.print_edge_right: 0 print.printer_Bullzip_PDF_Printer.print_edge_top: 0 print.printer_Bullzip_PDF_Printer.print_evenpages: true print.printer_Bullzip_PDF_Printer.print_footercenter: print.printer_Bullzip_PDF_Printer.print_footerleft: &PT print.printer_Bullzip_PDF_Printer.print_footerright: &D print.printer_Bullzip_PDF_Printer.print_headercenter: print.printer_Bullzip_PDF_Printer.print_headerleft: &T print.printer_Bullzip_PDF_Printer.print_headerright: &U print.printer_Bullzip_PDF_Printer.print_in_color: true print.printer_Bullzip_PDF_Printer.print_margin_bottom: 0.5 print.printer_Bullzip_PDF_Printer.print_margin_left: 0.5 print.printer_Bullzip_PDF_Printer.print_margin_right: 0.5 print.printer_Bullzip_PDF_Printer.print_margin_top: 0.5 print.printer_Bullzip_PDF_Printer.print_oddpages: true print.printer_Bullzip_PDF_Printer.print_orientation: 0 print.printer_Bullzip_PDF_Printer.print_page_delay: 50 print.printer_Bullzip_PDF_Printer.print_paper_data: 1 print.printer_Bullzip_PDF_Printer.print_paper_height: 11.00 print.printer_Bullzip_PDF_Printer.print_paper_name: print.printer_Bullzip_PDF_Printer.print_paper_size_type: 0 print.printer_Bullzip_PDF_Printer.print_paper_size_unit: 0 print.printer_Bullzip_PDF_Printer.print_paper_width: 8.50 print.printer_Bullzip_PDF_Printer.print_plex_name: print.printer_Bullzip_PDF_Printer.print_resolution: 1515870810 print.printer_Bullzip_PDF_Printer.print_resolution_name: print.printer_Bullzip_PDF_Printer.print_reversed: false print.printer_Bullzip_PDF_Printer.print_scaling: 1.00 print.printer_Bullzip_PDF_Printer.print_shrink_to_fit: true print.printer_Bullzip_PDF_Printer.print_to_file: false print.printer_Bullzip_PDF_Printer.print_unwriteable_margin_bottom: 0 print.printer_Bullzip_PDF_Printer.print_unwriteable_margin_left: 0 print.printer_Bullzip_PDF_Printer.print_unwriteable_margin_right: 0 print.printer_Bullzip_PDF_Printer.print_unwriteable_margin_top: 0 print.printer_DEL001599E7B96D.print_bgcolor: false print.printer_DEL001599E7B96D.print_bgimages: false print.printer_DEL001599E7B96D.print_colorspace: print.printer_DEL001599E7B96D.print_command: print.printer_DEL001599E7B96D.print_downloadfonts: false print.printer_DEL001599E7B96D.print_duplex: 1515870810 print.printer_DEL001599E7B96D.print_edge_bottom: 0 print.printer_DEL001599E7B96D.print_edge_left: 0 print.printer_DEL001599E7B96D.print_edge_right: 0 print.printer_DEL001599E7B96D.print_edge_top: 0 print.printer_DEL001599E7B96D.print_evenpages: true print.printer_DEL001599E7B96D.print_footercenter: print.printer_DEL001599E7B96D.print_footerleft: &PT print.printer_DEL001599E7B96D.print_footerright: &D print.printer_DEL001599E7B96D.print_headercenter: print.printer_DEL001599E7B96D.print_headerleft: &T print.printer_DEL001599E7B96D.print_headerright: &U print.printer_DEL001599E7B96D.print_in_color: true print.printer_DEL001599E7B96D.print_margin_bottom: 0.5 print.printer_DEL001599E7B96D.print_margin_left: 0.5 print.printer_DEL001599E7B96D.print_margin_right: 0.5 print.printer_DEL001599E7B96D.print_margin_top: 0.5 print.printer_DEL001599E7B96D.print_oddpages: true print.printer_DE

And just happened to firefox, chrome and edge work fine! but i like firefox xD

please see if an update of your graphics driver can help: https://downloadcenter.intel.com/download/25308/Intel-Iris-Iris-Pro-and-HD-Graphics-Driver-for-4th-Gen-Windows-10-64bit

philipp said

please see if an update of your graphics driver can help: https://downloadcenter.intel.com/download/25308/Intel-Iris-Iris-Pro-and-HD-Graphics-Driver-for-4th-Gen-Windows-10-64bit

I did with Dell Driver Update Utility, I have the newest driver, everything run ok even games, but firefox not.

can you try with the version i've proposed - it will be newer than your dell provided driver that is currently installed.

in case this doesn't help, please disable hardware acceleration for the moment in the firefox menu ≡ > options > advanced > general (that setting will take a restart of the browser to take effect).

philipp said

can you try with the version i've proposed - it will be newer than your dell provided driver that is currently installed. in case this doesn't help, please disable hardware acceleration for the moment in the firefox menu ≡ > options > advanced > general (that setting will take a restart of the browser to take effect).

Thx it works!! =)