Systrsy.exe is a Trojan.Cdtray. Systrsy.exe opens and closes the CD-ROM drive. Related files: %ProgramFiles%\Internet Explorer\Systrsy.exe %ProgramFiles%\Autorun.inf Adds the value: "(Default)" = "%Progam Files%\Internet Explorer\Systrsy.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Kill Systrsy.exe process and remove Systrsy.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.