Click Start
Click Control Panel
Click Classic View
Click Add/Remove Programs
Select Windows Defender
Click to "remove" it
Restart your computer
Download from
http://www.microsoft.com/antispyware
and install the latest version, and let it update.
If it still happens, you may have a computer-virus that is "disabling" Windows Defender everytime you restart.
toshiba A135-2386
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