Hi, try to scan your PC using SUPERAntiSpyware (secondary anti-malware program). If nothing found, try to scan using Malwarebytes (tertiary anti-malware program). Again, if nothing found, no need to worry.
To find what program that the notice is indicating, try go to Start > All Programs > check all your programs there. I believe a new program has a different background color, I'm not sure if it white or flesh. Just take a look.