There is no virus known by this name to F-Secure anti-virus products. However, this 'virus' is sometimes reported, because some versions of McAfee Scan install a special MBR code while disinfecting boot viruses. This MBR will always display text "Loading Bootstrap..." during boot-up.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
More information on scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.