redirected webpages etc) even after you ‘successfully’ removed all viruses – and multiple full virus scans with different antivirus programs detect no more viruses. The most obvious sign is if you still encounter virus activity (e.g. So, after you reinstall Windows, your computer runs that same MBR code again which then reinfects your brand new installation of Windows with more viruses – and you’re back to square one… Typical Sign of MBR Virus Infection It contains data on how the hard drive is partitioned and also loads the installed operating system.Ĭrucially, the code in the MBR is run as your computer first starts up ( before Windows loads) which makes it a great place for a virus or rootkit to hide.Įven if you reinstall Windows or format your hard drive, a Master Boot Record virus will not be deleted. It is a special type of boot sector stored at the very beginning of your hard drive – so it is outside of normal Windows partitions and volumes. Using a Windows Recovery CD/DVD to FixMBR
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