GMER is an application that detects and removes rootkits, It is used by the Avast! antivirus application. It runs on Microsoft Windows and has support for Windows NT, 2000, XP, Vista, and 7.
Do NOT run the Gmer program. It is Malware. It can lock up your system and force you to do a hard shut down which can result in loss of data. If you are a daredevil and want to run it anyway then backup all your data on your hard disk before you do.