Hi jmshan

BOC425.exe is the GUI ( Graphical User Interface ) and BOCore.exe is in fact the program. So if one of them is not running after booting something is wrong with the installation.
You are right about turning off other real-time security programs when installing BOClean. When they are running they can indeed interfere.
Lets proceed like this :
- Open the task manager and stop BOCore.exe ( if that is running ).
- Close the task manager and uninstall BOClean.
- Reboot.
- Shut down your network connection ( pull the network cable out to be sure ).
- Turn off McAfee Security Suite ( so Firewall, Anti Virus etc. ), Windows Defender and every other real-time security program you may have.
- Install BOClean following the install instructions for Vista from here :
http://forums.comodo.com/comodo_boclean_antimalware_faq/download_link_installuninstall_instructions_user_guide-t8442.0.html- Reboot.
- Turn on McAfee Security Suite, Windows Defender etc.
- Re-establish your network connection.
Let me know if that helps you

Greetz, Red.
Edit : dang typo's, I am getting old
