If you were one of the unlucky people/companies to be hit by an MBR over writing trojan while downloading Audacity, You can still repair the overwritten MBR.
Audacity’s download partner was hacked by compromised user accounts and the windows installer was replaced by a destructive malware.
For those infected the following message comes up on reboot (the classic shell was also affected).
Below is a vid demonstrating the malware and then how to repair your MBR.
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