Booting cleanup?

When I boot up my computer I get several options for booting. Looks like this:

Windows 7
Windows 7
Defendguard v3 ! something like that - I never use it.

How can I clean this up? I'd like to keep just one of the windows 7, and the linuxmint for dualbooting. I tried googling about htis, and get stuff on grub and MBR and I have no idea what these things are, what they do, or if they apply to me.
2 answers Last reply Best Answer
More about booting cleanup
  1. Best answer (Click on "Check plans", there is a free download)
    And of course, be carefull what you're doing (make a backup first)
  2. Best answer selected by shbriggs.
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