Do a malware check with some malware scanning programs on the Windows computer.
Please scan with all programs because each program detects different malware.

Make sure that you update each program to get the latest version of their databases before doing a scan.

• Malwarebytes' Anti-Malware:
  http://www.malwarebytes.org/mbam.php
• SuperAntispyware:
  http://www.superantispyware.com/
• Microsoft Safety Scanner:
  http://www.microsoft.com/security/scanner/en-us/default.aspx
• Windows Defender: Home Page:
  http://www.microsoft.com/windows/products/winfamily/defender/default.mspx
• Spybot Search & Destroy:
  http://www.safer-networking.org/en/index.html
• Kasperky Free Security Scan:
  http://www.kaspersky.com/security-scan

You can also do a check for a rootkit infection with TDSSKiller.

• http://support.kaspersky.com/viruses/solutions?qid=208280684

See also:

• "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked

You can open the about:config page and search for prefs that are referring to "qv06" and reset those prefs via the right-click context menu to the default value.

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

See also:

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
• http://www.google.com/search?name=f&hl=en&q=qv06+removal+tool

please go to firefox > addons > extensions & remove any suspicious entries (toolbars, things that you have not installed intentionally, don't know what purpose they serve, etc). also go to the windows control panel / programs and remove all toolbars or potentially unwanted software from there and run a full scan of your system with the security software that you have in place and different other tools like the free version of malwarebytes & adwcleaner.

Remove a toolbar that has taken over your Firefox search or home page Troubleshoot Firefox issues caused by malware

Actually this search engine is normally installed with other software that you download. Use a good uninstaller to remove those software and scan the registry and hard-disk for any remaining files (advanced system care uninstaller does both) and delete them.

After that, make sure the browser startup in about:config is set to your default homepage.

Finally, remove all shortcuts of Mozilla Firefox manually and recreate them. This last step is essential to ensure you don't land up on this site on startup. To check simply view the target file of the shortcut in it's properties. It should be just firefox.exe and not have any url next to it.

Go Through your addon list and uninstall stuff you do not need (like wildtangent, etc). Scan your PC with anti-malware program. Then go to about:config and reset all values that reference qvo6. If you do not scan with anti-malware, QVO6 settings might reset back.

i have the same problem but it only fix it when it open but when i start a new tab from mozilla it appears QV06??? i have deleted it from extensions, from Shortcut, option help me pls

You may try with the steps below

1. reset your browser

- firefox

• Click on the Firefox button > Help > Troubleshooting information.
• A new window pops up with a box containing ‘Reset Firefox’ button on the left uppers corner of the web page
• A box pops up for confirmation, please click ‘Reset Firefox

2. manually change browser settings

- firefox At the top of the Firefox window, click on the Tools menu -> manage Add-ons -> modification should be made under Extensions tab and Plugins tab respectively.

3.disable startup item related to beesq.net

- Windows 7/XP/Vista Start Menu -> Select ‘Run’ -> type ‘MSCONFIG’ -> find qvo6 extension > press ‘Disable all’.

If you owns Windows8 and you use other version of browsers like Google Chrome and IE, you may need to visit the site here: http://virusremovalguideline.blogspot.com/2013/09/qv06-uninstall-how-to-remove-qv06com.html

Step1: Reset all the Browsers. Internet Explorer

1. Open Internet Explorer on your computer.
2. Click on the Gear Icon at the Top of the Browser window and click on Internet Option.
3. Go to Advanced Tab.
4. Click on the reset button.
5. A Dialogue box will pop on your screen.
6. Click on the check box to delete all your personal settings.
7. Click on Reset Button.
8. When Internet Explorer finishes resetting, click Close in the confirmation dialogue box and then click OK.
9. Your browser is now reset to its default settings.
10. Watch this video: How to Remove Qvo6 Toolbar from Internet Explorer

Firefox

edit additional information and preliminary steps suggested by a moderator ~J99

1. Read Reset Firefox preferences to troubleshoot and fix problems
   note you will lose some information including open tabs,
   and any extensions will be uninstalled.
2. You may wish to
   Close all unnecessary open tabs.
   Boookmark any open tabs, and the home websites of all Firefox extensions that you have installed.
   See also Find and install add-ons to add features to Firefox

1. Open Firefox Browser on your computer.
2. Move your mouse to the top of the screen. Right Click and select menu bar.
3. This displays menu bar.
4. Click on the Help Menu.
5. Now, click on Troubleshooting Information.
6. Click the Reset Firefox button in the upper-right corner of the Troubleshooting Information page.
7. To continue, click Reset Firefox in the confirmation window that opens.
8. Firefox will close and reset to its default settings.
9. Watch this video:How to Remove Qvo6 Toolbar from Mozilla Firefox

Chrome

1. Click the Page Icon at the top right corner of the browser.
2. Select Settings.
3. Click Show advanced settings Link
4. Scroll down and find the "Reset browser settings” section.
5. Click Reset browser settings button.
6. In the dialog that appears, click Reset.
7. Close and Open the Browser again.
8. Google Chrome is now reset to its default settings.
9. Watch this video:How to Remove Qvo6 from Google Chrome

Step 2: Clean your computer with Adwcleaner. Download Adwcleaner Here: http://general-changelog-team.fr/fr/downloads/viewdownload/20-outils-de- xplode/2-adwcleaner

Step 3: Remove any unwanted softwares

1. Go to Control panel
2. Click on Uninstall a Program Link.
3. Look for any unwanted toolbars / softwares and click uninstall.

Step 4. Scan your computer with Malware bytes or any Updated Anti Malware Software You have. You can download Malware bytes here: http://www.bleepingcomputer.com/download/malwarebytes-anti-malware/