Is it safe to use Microsoft Tools and what is Firewall and how to turn it on.

  • Thread starter Thread starter Muhammad Bilal_775
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M

Muhammad Bilal_775

Hi,My question is that is it safe to use Microsoft Tools from Microsoft website to improve pc's Performance and can you name some of them that are the best?
Second Part:---What is firewall and how to turn it on?Its not turning on my Pc please be brief and guide me step by step!
THNX!
Windows 8

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