I don't know why, but everytime I open my browser Bing pops up.

Question

I uninstalled the search engine, I started my browser with the add-ons disabled, and I don't have the DIV add-on so I don't know what to do! But every time I open my browser Bing pops up. However, when I hit my home button, it takes me directly to my homepage (which should have came up first), so I know my homepage didn't get reset.
It also happens when I let my computer sleep, and I re-open it, Bing pops open another tab and its the first thing that opens. I don't know what to do to get rid of it, but it is driving me insane!!! Please help!!

Answer 1

Application Basics
Name: Firefox
Version: 25.0.1
User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0
Extensions
Name: Trend Micro BEP Firefox Extension
Version: 7.5.0.1137
Enabled: false
ID: [email protected]
Name: Trend Micro Osprey Firefox Extension
Version: 1.0.0.1194
Enabled: false
ID: {21541D23-FDA1-4bf3-8AF2-8F623BF70B07}
Name: Trend Micro Toolbar
Version: 6.0.0.2030
Enabled: false
ID: {22181a4d-af90-4ca3-a569-faed9118d6bc}
Important Modified Preferences
browser.cache.disk.capacity: 358400
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
browser.cache.disk.smart_size_cached_value: 358400
browser.places.smartBookmarksVersion: 4
browser.sessionstore.upgradeBackup.latestBuildID: 20131112160018
browser.startup.homepage: http://www.google.com/
browser.startup.homepage_override.buildID: 20131112160018
browser.startup.homepage_override.mstone: 25.0.1
dom.mozApps.used: true
extensions.lastAppVersion: 25.0.1
gfx.direct3d.last_used_feature_level_idx: 0
network.cookie.prefsMigrated: true
places.database.lastMaintenance: 1386439370
places.history.expiration.transient_current_max_pages: 93068
plugin.disable_full_page_plugin_for_types: application/pdf
plugin.importedState: true
privacy.sanitize.migrateFx3Prefs: true
storage.vacuum.last.index: 0
storage.vacuum.last.places.sqlite: 1386439368
Graphics
Adapter Description: AMD Radeon HD 7640G
Adapter Drivers: aticfx64 aticfx64 aticfx64 aticfx32 aticfx32 aticfx32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64
Adapter RAM: 512
Device ID: 0x9903
Direct2D Enabled: true
DirectWrite Enabled: true (6.3.9600.16384)
Driver Date: 9-10-2013
Driver Version: 13.152.1.1000
GPU #2 Active: false
GPU Accelerated Windows: 2/2 Direct3D 10
Vendor ID: 0x1002
WebGL Renderer: Google Inc. -- ANGLE (AMD Radeon HD 7640G Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote: false
AzureCanvasBackend: direct2d
AzureContentBackend: direct2d
AzureFallbackCanvasBackend: cairo
AzureSkiaAccelerated: 0
JavaScript
Incremental GC: true
Accessibility
Activated: false
Prevent Accessibility: 0
Library Versions
NSPR
Expected minimum version: 4.10.2
Version in use: 4.10.2
NSS
Expected minimum version: 3.15.3 Basic ECC
Version in use: 3.15.3 Basic ECC
NSSSMIME
Expected minimum version: 3.15.3 Basic ECC
Version in use: 3.15.3 Basic ECC
NSSSSL
Expected minimum version: 3.15.3 Basic ECC
Version in use: 3.15.3 Basic ECC
NSSUTIL
Expected minimum version: 3.15.3
Version in use: 3.15.3