hello, can you try to replicate this behaviour when you launch firefox in safe mode once? if not, maybe an addon is interfering here...

Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

No, it's the same in safe mode. Still only offers typed in addresses for autocomplete.

You can check the browser.urlbar preferences on the about:config page and reset user set (bold) prefs via the right-click context menu to the default value.

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

• http://kb.mozillazine.org/about:config

Everything is set to default

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...

It's too long to post here, I had to remove the printer information part

Application Basics

Name: Firefox Version: 31.0 User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0

Crash Reports for the Last 3 Days

All Crash Reports

Extensions

Name: Adblock Plus Version: 2.6.4 Enabled: true ID: {d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}

Name: British English Dictionary Version: 1.19.1 Enabled: true ID: en-GB@dictionaries.addons.mozilla.org

Name: FlashGot Version: 1.5.6.5 Enabled: true ID: {19503e42-ca3c-4c27-b1e2-9cdb2170ee34}

Name: Greasemonkey Version: 2.2 Enabled: true ID: {e4a8a97b-f2ed-450b-b12d-ee082ba24781}

Name: HDS Link Detector Version: 0.6 Enabled: true ID: jid0-HFFmJoceGjTSKDBEWPpzfX9By7I@jetpack

Name: Live HTTP headers Version: 0.17 Enabled: true ID: {8f8fe09b-0bd3-4470-bc1b-8cad42b8203a}

Name: LogMeIn, Inc. Remote Access Plugin Version: 1.0.0.1082 Enabled: true ID: LogMeInClient@logmein.com

Name: Remove It Permanently Version: 1.0.6.10 Enabled: true ID: {1dbc4a33-ea62-4330-966c-7bdad3455322}

Graphics

Adapter Description: AMD Radeon R9 200 Series Adapter Drivers: aticfx64 aticfx64 aticfx64 aticfx32 aticfx32 aticfx32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64 Adapter RAM: 4095 ClearType Parameters: Gamma: 2200 Pixel Structure: B ClearType Level: 50 Enhanced Contrast: 300 Device ID: 0x67b0 Direct2D Enabled: true DirectWrite Enabled: true (6.2.9200.16492) Driver Date: 8-12-2014 Driver Version: 14.201.1008.0 GPU #2 Active: false GPU Accelerated Windows: 1/1 Direct3D 10 Vendor ID: 0x1002 WebGL Renderer: Google Inc. -- ANGLE (AMD Radeon R9 200 Series Direct3D9Ex vs_3_0 ps_3_0) windowLayerManagerRemote: false AzureCanvasBackend: direct2d AzureContentBackend: direct2d AzureFallbackCanvasBackend: cairo AzureSkiaAccelerated: 0

Important Modified Preferences

accessibility.typeaheadfind.flashBar: 0 browser.cache.disk.capacity: 358400 browser.cache.disk.smart_size_cached_value: 358400 browser.cache.disk.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false browser.cache.frecency_experiment: 1 browser.history_expire_days_min: 100 browser.history_expire_days.mirror: 30 browser.places.createdDefaultQueries: true browser.places.createdSmartBookmarks: true browser.places.importBookmarksHTML: false browser.places.importDefaults: false browser.places.migratePostDataAnnotations: false browser.places.smartBookmarksVersion: 7 browser.places.updateRecentTagsUri: false browser.search.param.yahoo-fr: megaup browser.search.param.yahoo-fr-cjkt: megaup browser.sessionstore.upgradeBackup.latestBuildID: 20140716183446 browser.startup.homepage_override.buildID: 20140716183446 browser.startup.homepage_override.mstone: 31.0 browser.tabs.autoHide: true browser.tabs.drawInTitlebar: false browser.tabs.onTop: false browser.tabs.warnOnClose: false dom.disable_open_during_load: false dom.max_script_run_time: 1800 dom.mozApps.used: true dom.w3c_touch_events.expose: false extensions.lastAppVersion: 31.0 font.internaluseonly.changed: true font.language.group: x-central-euro font.minimum-size.x-western: 10 general.useragent.extra.btrs: BTRS122288 general.useragent.extra.microsoftdotnet: (.NET CLR 3.5.30729) gfx.direct3d.last_used_feature_level_idx: 0 gfx.direct3d.prefer_10_1: true network.cookie.prefsMigrated: true network.http.max-connections: 50 network.http.pipelining: true network.http.pipelining.maxrequests: 10 network.protocol-handler.warn-external.mms: false network.protocol-handler.warn-external.steam: false network.protocol-handler.warn-external.synacast: false network.protocol-handler.warn-external.veoh: false places.database.lastMaintenance: 1410099529 places.history.expiration.transient_current_max_pages: 104858 places.history.expiration.transient_optimal_database_size: 167772160 places.last_vacuum: 1297751548 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true print.print_printer: Microsoft XPS Document Writer ... privacy.clearOnShutdown.cookies: false privacy.clearOnShutdown.formdata: false privacy.clearOnShutdown.sessions: false privacy.cpd.downloads: false privacy.cpd.formdata: false privacy.cpd.history: false privacy.cpd.sessions: false privacy.item.formdata: false privacy.item.sessions: false privacy.sanitize.migrateFx3Prefs: true privacy.sanitize.timeSpan: 0 security.OCSP.signingCA: Builtin Object Token:IPS CLASE1 root security.OCSP.URL: security.warn_viewing_mixed: false storage.vacuum.last.index: 0 storage.vacuum.last.places.sqlite: 1360449803

user.js Preferences

Your profile folder contains a user.js file, which includes preferences that were not created by Firefox.

JavaScript

Incremental GC: true

Accessibility

Activated: false Prevent Accessibility: 0

Library Versions

NSPR Expected minimum version: 4.10.6 Version in use: 4.10.6

NSS Expected minimum version: 3.16.2 Basic ECC Version in use: 3.16.2 Basic ECC

NSSSMIME Expected minimum version: 3.16.2 Basic ECC Version in use: 3.16.2 Basic ECC

NSSSSL Expected minimum version: 3.16.2 Basic ECC Version in use: 3.16.2 Basic ECC

NSSUTIL Expected minimum version: 3.16.2 Version in use: 3.16.2

Experimental Features

you could paste it into a service like http://pastebin.mozilla.org/ then and provide a link to the log here...

I assume the problem is not with the printers, so the above should be sufficient.

due to a few things (user.js file, outdated browser.history prefs, customizations to network./security. preferences), i'd probably create a new profile and start fresh: Profile Manager - Create, remove or switch Firefox profiles