Win32:Malware-gen

Hi Tech Team!
I have found Win32:Malware-gen using the boot sector scan and was able to delete all but one file, which has located in a protected file. The location is C:Windows\Installer\63d76.msij>Binary.NewBinary22. This appears to be a file associated with the reinstallation portion of Windows and I believe it is a part of the safe-restore/restore point program. I can’t locate the entire Windows\Installer file where it was located, and think it might have been hidden. Avast still shows the virus as present. I’ve tried MalwareBytes and this program doesn’t find the virus. I’ve tried Spybot, same thing. When I ran Avast on that file alone, it showed a virus present again, but refuses to alter or delete the file as it is protected. Help!

Best,
MEHackett

Refer to the guide at the start of this thread>>http://forum.avast.com/index.php?topic=53253.0