I too also came down with this yesterday afternoon and have been trying to resolve it since. I was close to giving up but stumbled across the ability to create a norton recovery disk. It's currently scanning now but straight away found Boot.Tidserv.B, so I havn't yet tried letting it fix it but I imagine like everyone else here it won't be able to sort it. Previously I didn't even have a name to this bugger, so thats progress. I followed dantilley's post on the symantec forums to here.
Windows 7 64-bit here.
Unable to boot into windows whatsoever, not even in Safe Mode. Upon loading windows I get a black screen with a movable cursor, after about a minute it'll blue screen and reboot, sometimes it just blue screens and reboots straight away. No way for me to run the above tools unless there's a way to do it before boot??
UPDATE - Like all the others here on the forums who have also picked up Boot.Tidserv.B - Norton Recovery Disk found the virus but was unable to fix it. I can't run the two apps posted in another post to help fix the issue as I can't get into windows. Thanks in advance.
Edited by lucifon, 20 January 2011 - 08:09 PM.