Freezing PC Problems with windows 7 32 bit

My notebook is constantly freezing up after startup since I have been using comodo. Any help, have set in paranoid mode and safe mode for firewall. I have to do a hard reset to get any action from my computer. Is there any way to use this software or should I uninstall and use something else?? thanks for help, sorry new to the firewall and security stuff!

Do you have Block all unknown requests if the application is closed enabled? That can give problems with some programs during boot not being allowed.

When the above setting is not the cause see if you have " Enable adaptive mode under low system resources" enabled.

Does switching D+ to Safe Mode help to make your system boot? Also post a screenshot of D+ Events of around a troubled boot time.