Moved this from Community Interface Help (ie problems with the site) to Home & Home Office / Virus and Spyware Protection / VirusScan.
Two things here : "Scanning Rootkit" and boot Records.
The wording of that Rootkit message is misleading. We've already had a go at McAfee about this. It means "Scanning for rootkits", not that it's found one. Don't panic. Eventually they'll get around to changing the wording. In the meantime a lot of people get alarmed needlessly.
As for boot records : it's checking the MBR. If it finds an extra record there you should investigate the reason. Run this program and it will tell you what it finds on the MBR - I've downloaded it and tested it. On mine it found only one record.
Download MBRCheck - MajorGeeks
Edit - alternatively there are many other MBR-checkers in the thread at
MBR check tools. Use at your own risk, needless to say : I always download this sort of file to a safe place in Chrome, without running it, then upload the file to VirusTotal for checking.