it stops in safe mode, the only thing disabled is default theme.

You can try to disable hardware acceleration in Firefox.

• Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"

You need to close and restart Firefox after toggling this setting.

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
• https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

I tried that, still does it. In safe mode it doesn't crank up the fan. Only thing disabled in safe mode is the default theme.

What add-ons do you have?

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.

Application Basics

Name: Firefox Version: 37.0.2 User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:37.0) Gecko/20100101 Firefox/37.0 Multiprocess Windows: 0/1

Crash Reports for the Last 3 Days

All Crash Reports

Extensions

Graphics

Adapter Description: AMD Radeon HD 7800 Series Adapter Drivers: aticfx64 aticfx64 aticfx64 aticfx32 aticfx32 aticfx32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64 Adapter RAM: 2048 Device ID: 0x6818 DirectWrite Enabled: false (6.2.9200.16571) Driver Date: 11-20-2014 Driver Version: 14.501.1003.0 GPU #2 Active: false GPU Accelerated Windows: 0/1 Basic (OMTC) Subsys ID: 201c1787 Vendor ID: 0x1002 WebGL Renderer: Google Inc. -- ANGLE (AMD Radeon HD 7800 Series Direct3D11 vs_5_0 ps_5_0) windowLayerManagerRemote: true AzureCanvasBackend: skia AzureContentBackend: cairo 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: 1 browser.places.smartBookmarksVersion: 7 browser.sessionstore.upgradeBackup.latestBuildID: 20150415140819 browser.startup.homepage: https://mail.google.com/mail/u/0/#inbox|https://www.facebook.com/|http://massivelyop.net/|http://www.reddit.com/|http:// browser.startup.homepage_override.buildID: 20150415140819 browser.startup.homepage_override.mstone: 37.0.2 browser.tabs.warnOnClose: false dom.mozApps.used: true extensions.lastAppVersion: 37.0.2 font.internaluseonly.changed: true gfx.direct2d.disabled: true gfx.direct3d.last_used_feature_level_idx: 0 layers.acceleration.disabled: true media.gmp-gmpopenh264.lastUpdate: 1424954568 media.gmp-gmpopenh264.version: 1.3 media.gmp-manager.lastCheck: 1430273402 network.cookie.prefsMigrated: true places.database.lastMaintenance: 1430273402 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: 1427638756

Important Locked Preferences

JavaScript

Incremental GC: true

Accessibility

Activated: false Prevent Accessibility: 0

Library Versions

NSPR Expected minimum version: 4.10.8 Version in use: 4.10.8

NSS Expected minimum version: 3.17.4 Basic ECC Version in use: 3.17.4 Basic ECC

NSSSMIME Expected minimum version: 3.17.4 Basic ECC Version in use: 3.17.4 Basic ECC

NSSSSL Expected minimum version: 3.17.4 Basic ECC Version in use: 3.17.4 Basic ECC

NSSUTIL Expected minimum version: 3.17.4 Version in use: 3.17.4

Experimental Features

You have no add-ons?

I see you have more than one home page. What are they?