Microsoft security software detects and removes this threat.
This virus can make your PC crash unexpectedly. If you can reboot your PC after the crash, you should run a full antivirus scan.
It can be distributed in similar ways to other malware, for example, by exploiting vulnerabilities, or installed by other malware, such as TrojanDropper:Win32/Rovnix.H.
Find out ways that malware can get on your PC.
What to do now
Use the following free Microsoft software to detect and remove this threat:
•Windows Defender for Windows 8.1, or Microsoft Security Essentials for Windows 7 and Windows Vista
•Microsoft Safety Scanner
You should also run a full scan. A full scan might find other, hidden malware.
Get more help
To restore your PC, you might need to download and run Windows Defender Offline. See our advanced troubleshooting page for more help.
You can also ask for help from other PC users at the Microsoft virus and malware community. If you’re using Windows XP, see our Windows XP end of support page.
Run the Bootrec.exe tool
To completely remove this threat you might need to run the Bootrec.exe tool using your Windows installation CD.
For Windows 8:
1.Put your Windows 8 media in the DVD drive and restart your PC.
2.Select a language, time and currency, and keyboard or input method, and then click Next.
3.Click Repair your computer.
4.Click Troubleshoot, then Advanced options.
5.Click Command Prompt and then type Bootrec /FixBoot and then press Enter.
6.Type Exit and the press Enter.
7.At the Choose an Option screen click Continue.
8.Remove the Windows 8 CD from your DVD drive and restart your PC.
For Windows 7:
1.Put your Windows 7 media in the DVD drive and restart your PC
2.Press any key when you are prompted.
3.Select a language, time and currency, and keyboard or input method, and then click Next.
4.Click Repair your computer.
5.Select the operating system that you want to repair, and then click Next.
6.In the SystemRecovery Options dialog box, click Command Prompt.
7.Type Bootrec.exe /fixboot, and then press Enter.
8.Remove the Windows 7 CD from your DVD drive and restart your PC.