If the MBR scan report says ‘Windows XP/Vista/7 default MBR code’, it means viruses are inside your PC. After that install that downloaded file with following the on-screen instructions and then run the file and scan for any infections.

Follow the given noted points to do it:įirst download Avast’s MBR infection detector from its official site. If you suspect a MBR virus, you should run several specific MBR checks. Methods to Check and Fix MBR Virus Infection with Avast So, after you reinstall Windows, your computer first runs that same MBR virus code which then reinjects your new installation of Windows with viruses – and you’re back to square one. After that you can detect and fix this MBR virus infection with Avast effectively.Įven if you reinstall Windows or format your hard drive, a virus infecting the MBR will not be cleared. To get rid of such infected files, you need to visit the link read out the instructions carefully. However, a boot sector virus is usually spread through external media like infected USB drive or other media like CD or DVD.

The MBR contains the information concerning the location of partitions on the drive and reading of the bootable operating system partition. The first sector is called the boot sector and contains the Master Boot Record. All disks and hard drives are divided into segments or cluster of sectors.

Avast boot scan report