Amd Flash Memory Transcend 32 Gb Sdhc Review What Is The Flashing Window I Amd Seeing?

What is the flashing window I amd seeing? - amd flash memory transcend 32 gb sdhc review

I updated XP SP3 on my laptop and I noticed again and again appears as a small window for a split second before it disappears, come and go so fast, but still significant, no one knows what that might be? My antivirus does not catch anything, so do not think this is a virus.