The bootkit malware Trojan:Win32/Popureb.E is a hidden Trojan at your computer’s root.
To Prevent from getting infected with the malware, install the latest definitions for Microsoft Forefront, Microsoft Security Essentials, and Microsoft Defender.
To get rid of the malware and restore your computer to normal state, follow the instructions in the except below from a Microsoft blog post.
If your system does get infected with Trojan:Win32/Popureb.E, we advise you to:
To fix the MBR, we advise that you use the System Recovery Console, which supports a command called "fixmbr".
To find out how to use your system's recovery options, refer to the following articles:
Note: If you're prompted to insert a Windows installation disc, it means that the files needed to create the system repair disc can't be found on your computer. Insert a Windows 7 installation disc.