Question about Defender SN500-4CH-002 Feature-rich 4 Channel H.264 DVR Security System with Smart Phone Access and 4 Indoor/Outdoor Hi-Res CCD Night Vision Cameras
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The Windows Defender software constantly scans your computer for threats such as spyware that may slow down your computer or try to steal personal information.
If the software wasn't installed properly or is conflicting with other programs running on your machine, Windows Defender may not work correctly.
To repair the software you either need to download the latest update available for the program, or you need to completely uninstall and reinstall Windows Defender.
Restart your computer's operating system.
Double-click the "Windows Defender" icon in the system tray at the lower-right end of the screen.
Click the question mark icon at the top of the Windows Defender screen and choose "Check for Updates."
Select "Continue" if you are running Windows Vista.
Wait for the updates to finish installing and click "Scan."
Click "Stop Scan" if the problem persists.
Click the question mark icon again and select "Exit Windows Defender."
Click "Yes" to confirm you want to close the software.
Open the "Start" menu screen and select "Control Panel." Select "Uninstall a Program" in Windows 7 or Windows Vista, or instead choose "Add or Remove Programs" in Windows XP.
Click the "Windows Defender" entry and select "Uninstall."
Choose "Yes" and restart the computer after the program is removed.
Navigate to the Windows Defender installation webpage (see Below).
Click "Download" and double-click the Windows Defender installation file when it downloads to your hard drive.
Go through the onscreen installation instructions.
Open the "Start" menu and choose "All Programs."
Select "Windows Defender."
Click "Scan" to start a new scan for malicious software.
You might find some interesting security tips here.
Hope this helps
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