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Reset the web browser:
If your web browser settings homepage and search was put in by COupScaNner you can restore them to their previous default settings.

Microsoft Internet Explorer
Open Internet Explorer and click the Tools button, and then click Internet options.
Click on the Advanced tab, and then click Reset. Select the check box delete personal settings if you also want to remove search providers, accelerators, and home pages. When Internet Explorer has finished the application from the default settings, click Close, and then click OK.
The changes take effect the next time you open IE.

Mozilla Firefox
At the top of the Firefox window, click on the Firefox button, hover over the Help menu and select troubleshooting information.
To continue, click Reset Firefox in the confirmation window that appears. It closes and be reset.
When it's done, a window lists information that have been imported. Click Finish, and Firefox open.

Google Chrome
Open Chrome and click the Chrome menu on the toolbar of the browser.
Select settings. In the 'Search' section, click Manage search engine. Check if (default) will appear next to your favorite search engine. Otherwise, the mouse over it and click Make default. Mouse over any other writing, suspicious search engine that do not know and click X to remove them.
When the "Show Home button" is checked, a web address appears below. If you want the button from home page to open a different Web page, click on edit to enter a link.
Restart Google Chrome.

Make sure that CoupScanNer is uninstalled using the Microsoft Uninstaller utility:
http://support.Microsoft.com/mats/program_install_and_uninstall/en

Try to run MalwareBytes Anti malware free version after download & update

Download & run AdwCleaner

A sfc scan from prompt as an administrator after all these,

Restart the system.

Thank you

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Tags: Notebooks