Virus Scan Issues

Hello Everyone,

 

I tried to run a virus scan yesterday and it was very slow. I have about 600,000 files that it was scanning, and around 360,000 the scan closed unexpectedly. It had been operating pretty slowly. I reopened it and tried to scan again, about half an hour later, the same thing happened. I tried this one more time, the same thing happened.

 

I figured maybe I could fix it my restarting, so I restarted and tried to scan. Now the scan takes all of two seconds and says "scanning 2 files." 

 

What could be going on? I'm worried that there is some sort of virus disabling the scan.