Hallo, every time I clean my registry with RegSeeker, I will find these two entries, which I always delete, but they appear again and again: HKLM\System\ControlSet001\Services\mchInjDrv and HKLM\System\CurrentControlSet\Services\mchInjDrv. With both entries there comes the comment from RegSeeker: File or Path does not exist - Image Path:\??\C:\Windows\TEMP\mc22.tmp. The number of the TEMP file is always changing, sometimes it is mc21.tmp or something else. I am cleaning my system every time with CCleaner from TEMP files and cache entries. Is this the reason for creating another number for the TEMP file? What is mchInjDrv? Somewhere I have read it could be a trojan or some programs like SpySweeper (which I used), a² (I still have this) and other similiar programs use it. I ran several programs to check my PC (AntiVir, Spybot S&D, a², Ad-Aware SE, Pest Patrol, Ewido, Escan, HijackThis, Spyware Doctor, DrWebCureIt and several online scanners, also tools to find rootkits. Nothing was found and I also have no problems. Thank you very much for an answer.