hi karen, 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: 38.0.5 Build ID: 20150525141253 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0 Multiprocess Windows: 0/1 (default: false)

Crash Reports for the Last 3 Days

Report ID: bp-4ab22112-ec2e-41c5-a15f-f5fbf2150708 Submitted: 39 minutes ago

Report ID: bp-fd3e0bcb-526d-4d42-8e84-b88d12150708 Submitted: 57 minutes ago

All Crash Reports

Extensions

Name: McAfee Security Scan Plus Version: 1.0 Enabled: false ID: {e4f94d1e-2f53-401e-8885-681602c0ddd8}

Graphics

Adapter Description: Intel(R) HD Graphics Family Adapter Drivers: igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32 Adapter RAM: Unknown Device ID: 0x0a16 Direct2D Enabled: true DirectWrite Enabled: true (6.3.9600.17795) Driver Date: 4-24-2014 Driver Version: 10.18.10.3574 GPU #2 Active: false GPU Accelerated Windows: 1/1 Direct3D 11 (OMTC) Subsys ID: 05f91028 Vendor ID: 0x8086 WebGL Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics Family 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.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false browser.cache.frecency_experiment: 4 browser.download.importedFromSqlite: true browser.download.manager.alertOnEXEOpen: true browser.newtab.url: http://in.search.yahoo.com/?fr=hp-ddc-bd-tab&type=bl-bfr-sw__alt__ddc_dsssyctab_bd_com browser.places.smartBookmarksVersion: 7 browser.sessionstore.upgradeBackup.latestBuildID: 20150525141253 browser.startup.homepage: http://in.search.yahoo.com/?fr=hp-ddc-bd&type=bl-bfr-sw__alt__ddc_dsssyc_bd_com browser.startup.homepage_override.buildID: 20150525141253 browser.startup.homepage_override.mstone: 38.0.5 dom.mozApps.used: true extensions.lastAppVersion: 38.0.5 gfx.direct3d.last_used_feature_level_idx: 0 keyword.URL: http://in.search.yahoo.com/yhs/search?hspart=ddc&hsimp=yhs-ddc_bd&type=bl-bfr-sw__alt__ddc_dss_bd_com&p={searchTerms} media.gmp-eme-adobe.lastUpdate: 1434355987 media.gmp-eme-adobe.version: 11 media.gmp-gmpopenh264.lastUpdate: 1433947570 media.gmp-gmpopenh264.version: 1.4 media.gmp-manager.buildID: 20150525141253 media.gmp-manager.lastCheck: 1436377259 network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1436377257 places.history.expiration.transient_current_max_pages: 104858 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true privacy.sanitize.migrateFx3Prefs: true storage.vacuum.last.index: 1 storage.vacuum.last.places.sqlite: 1433950769

Important Locked Preferences

JavaScript

Incremental GC: true

Accessibility

Activated: true Prevent Accessibility: 0

Library Versions

NSPR Expected minimum version: 4.10.8 Version in use: 4.10.8

NSS Expected minimum version: 3.18.1 Basic ECC Version in use: 3.18.1 Basic ECC

NSSSMIME Expected minimum version: 3.18.1 Basic ECC Version in use: 3.18.1 Basic ECC

NSSSSL Expected minimum version: 3.18.1 Basic ECC Version in use: 3.18.1 Basic ECC

NSSUTIL Expected minimum version: 3.18.1 Version in use: 3.18.1

Experimental Features

Application Basics

Name: Firefox Version: 38.0.5 Build ID: 20150525141253 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0 Multiprocess Windows: 0/1 (default: false)

Crash Reports for the Last 3 Days

Report ID: bp-4ab22112-ec2e-41c5-a15f-f5fbf2150708 Submitted: 39 minutes ago

Report ID: bp-fd3e0bcb-526d-4d42-8e84-b88d12150708 Submitted: 57 minutes ago

All Crash Reports

Extensions

Name: McAfee Security Scan Plus Version: 1.0 Enabled: false ID: {e4f94d1e-2f53-401e-8885-681602c0ddd8}

Graphics

Adapter Description: Intel(R) HD Graphics Family Adapter Drivers: igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32 Adapter RAM: Unknown Device ID: 0x0a16 Direct2D Enabled: true DirectWrite Enabled: true (6.3.9600.17795) Driver Date: 4-24-2014 Driver Version: 10.18.10.3574 GPU #2 Active: false GPU Accelerated Windows: 1/1 Direct3D 11 (OMTC) Subsys ID: 05f91028 Vendor ID: 0x8086 WebGL Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics Family 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.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false browser.cache.frecency_experiment: 4 browser.download.importedFromSqlite: true browser.download.manager.alertOnEXEOpen: true browser.newtab.url: http://in.search.yahoo.com/?fr=hp-ddc-bd-tab&type=bl-bfr-sw__alt__ddc_dsssyctab_bd_com browser.places.smartBookmarksVersion: 7 browser.sessionstore.upgradeBackup.latestBuildID: 20150525141253 browser.startup.homepage: http://in.search.yahoo.com/?fr=hp-ddc-bd&type=bl-bfr-sw__alt__ddc_dsssyc_bd_com browser.startup.homepage_override.buildID: 20150525141253 browser.startup.homepage_override.mstone: 38.0.5 dom.mozApps.used: true extensions.lastAppVersion: 38.0.5 gfx.direct3d.last_used_feature_level_idx: 0 keyword.URL: http://in.search.yahoo.com/yhs/search?hspart=ddc&hsimp=yhs-ddc_bd&type=bl-bfr-sw__alt__ddc_dss_bd_com&p={searchTerms} media.gmp-eme-adobe.lastUpdate: 1434355987 media.gmp-eme-adobe.version: 11 media.gmp-gmpopenh264.lastUpdate: 1433947570 media.gmp-gmpopenh264.version: 1.4 media.gmp-manager.buildID: 20150525141253 media.gmp-manager.lastCheck: 1436377259 network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1436377257 places.history.expiration.transient_current_max_pages: 104858 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true privacy.sanitize.migrateFx3Prefs: true storage.vacuum.last.index: 1 storage.vacuum.last.places.sqlite: 1433950769

Important Locked Preferences

JavaScript

Incremental GC: true

Accessibility

Activated: true Prevent Accessibility: 0

Library Versions

NSPR Expected minimum version: 4.10.8 Version in use: 4.10.8

NSS Expected minimum version: 3.18.1 Basic ECC Version in use: 3.18.1 Basic ECC

NSSSMIME Expected minimum version: 3.18.1 Basic ECC Version in use: 3.18.1 Basic ECC

NSSSSL Expected minimum version: 3.18.1 Basic ECC Version in use: 3.18.1 Basic ECC

NSSUTIL Expected minimum version: 3.18.1 Version in use: 3.18.1

Experimental Features

thanks for follwoing up with that information. it appears that there is adware/malware active on your system, so please perform all these steps:

1. reset firefox (this will keep your bookmarks and passwords)
2. afterwards go to the firefox menu ≡ > addons > extensions and in case there are still extensions listed there, disable them.
3. finally run a full scan of your system with different security tools like the free version of malwarebytes and adwcleaner to make sure that adware isn't present in other places of your system as well.

Troubleshoot Firefox issues caused by malware

hi Karen, just to follow-up: do you remember having installed any new software in particular before these ads & crashes started to pop up?

Adblock Plus {web link} Blocks annoying video ads on YouTube, Facebook ads, banners and much more. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Adblock Plus Pop-up Addon {web link} Adblock Plus Pop-up Addon extends the blocking functionality of Adblock Plus to those annoying pop-up windows that open on mouse clicks and other user actions.

Forum; Adblock Plus Homepage {web link}

no ..just a few video downloads..

The crash report flagged these programs;

{d5312e63-9df3-4c22-a241-661f84f4bfe2}.xpi = No results found MAL-WAR ? ? ?

winmm.dll = Windows Multimedia

mswsock.dll = Microsoft

combase.dll = Microsoft

msvcrt.dll = Microsoft C Runtime Library

rtworkq.dll = Microsoft ?

msmpeg2vdec.dll = Microsoft DTV-DVD Video Decoder

icudt52.dll = International Components for Unicode

Related Bugs 1181737 NEW --- crash in *.xpi@0x1f73

Discovered Hidden Add-on On Firefox. How To Check Yours https://support.mozilla.org/en-US/forums/support-forum-contributors/711335

Perform a System File Check to fix corrupted system files Win 7, 8, Vista: https://support.microsoft.com/en-us/kb/929833

See if there are updates for your graphics drivers https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

Check for updates all programs listed