Disable comodo services by changing relative file...

After comodo installation my pc is in crach with blue screen, I can’t access to SAFE MODE and I can’t restore the priviusly configuration because I have an error message: “The antivirus is running, disable antivirus to restore the configuration”.

I can access to PC files by recovery CD so I need to disable COMODO services working directly whit the files. So how I can disable the 4 COMODO service (Antivirus, Firewall, Auto-sandbox and HIPS) by changing the relative file?