Possible Rootkit?

Hi.  A couple of days ago I had an email and the bottom line was blue (unlike a separate link).  Stupidly I clicked on it and it led to a calendar entry.  This was particularly foolish as currently have an ongoing legal case and the email  was from the other party.

The next day two saved emails (important ones) were missing.  I was about to print them out.  I suspected the clicked link and/or that my email was hacked.

Norton security didn't find anything after a full scan.  I ran Norton Power eraser and it had two results.  One was WBridge the other was files.lnk.

I do have a card game program called WBridge so maybe a false positive?  Or is it infected?

I suspect files.lnk maybe a rootkit?

I then ran Kaspersky rescue disk (which took about 8 hours).  It didn't find anything.

I am not using the laptop until I know if it is infected.  I changed my email password using a different computer.  Unfortunately all the legal documents I need to work on for upcoming case are on my laptop.

Can anyone advise if files.lnk is a rootkit or keylogger, and what I can do about it please?  I have googled a bit and not found much other than there are some rootkits with .lnk and usually come from clicking a link in an email.

Thanks!