A hacker took over my computer, mainly my network is controlled by them. How to get rid of it

Original title: Hacker

I let a hacker in my computer, tech support imposter, he took over my computer, mainly my network is controlled by them. I use HP Pavilion Home Premium Windows 7, 64-bit sp2 Server 2008r2. Can someone help please?

Your post is a bit confusing.  Windows 7 does not have a "Service Pack 2" and is not the same Windows Server 2008 r2 operating system.

You need to contact all the sites for which you saved in your computer, in particular financial institutions, logon and change your log on credentials.

Backup of all your data first.  Also, before the system recovery, use a keyfinder as Magical JellyBean Keyfinder or Belarc Advisor utility to find any product keys/licenses you will need to reinstall your application programs.

Then you must do a clean install of Windows.  Because you have a CV, a "system recovery", as described here--> http://support.hp.com/us-en/document/c01867418

After the system recovery, uninstall any antivirus software free trial using the tool provided by the manufacturer of the antivirus (trial will have expired).  For a list of these tools, see http://support.eset.com/kb146/?locale=en_US , then you need to install a good antivirus.

After restoring your backup data, analyze all the files with your antivirus software and a program of quality (such Free MalwareBytes AntiMalware) antimalware software before opening any files.

Finally, reinstall your application programs from your original installation media (CD/DVD/downloaded the Installer).

Tags: Windows

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