To uninstall System Mechanic of whatever version, apart from deleting its files, you have to find and erase all relevant registry keys. Trust me it’s not an easy task and you have to be very careful when doing it.
First you have to shut it down. As an excellent PC optimization and maintenance utility, Mechanic has to “spread” its services to almost every part of your system. So simply a shutting down of the main programs may not totally bring down this app. Try task manager by Ctrl+Alt+Del, look for every entry related to System Mechanic and “kill” it. Or, if you are like me, who has no confident messing with the task manager but really wants to uninstall System Mechanic, the fast and most effective way is to get into your system Safe Mode, in where none of associated files will be loaded. Always remember that fully closure is a must for a successful uninstall.
Next thing is to delete all files and registry leftovers. Normally it’s no problem going to Control Panel->Add/Remove programs in Safe Mode, but this does not help you successfully uninstall System Mechanic every time, especially when the program is damaged or corrupted. Here is a tip: whatever happens after using the Control Panel, locate the following files:
C:\WINDOWS\system32\IncContxMenu.dll
C:\WINDOWS\system32\Incinerator.dll
C:\WINDOWS\system32\iolobtdfg.exe
C:\WINDOWS\system32\smrgdf.exe
When you find any of them, delete them and take out all relevant registry information. Now here comes another problem, as all the registry keys are in separate places and extremely difficult to pinpoint, you may be once again feeling like a headache as you don’t know how to work with the Registry Editor! Well, time to get a help. A small application named Perfect Uninstall will come as your final solution to fully uninstall System Mechanic. How it be real effective is, when you indicate those files to Perfect Uninstaller, it not only deletes the files, but also scans and takes out all relevant registry keys/entries, after that, it will scan your computer again, making sure no remnants escape. I guess sometimes it’s just so easy to have a professional tool at hand when you think you got stuck by all means.