I downloaded the trial version of CIS and now my computer doesn't work

I downloaded the free trial version of Comodo Internet Security Pro last night, rebooted my computer, it put up a box in the top right hand corner of the screen and from that point on I have no control of my mouse. I can’t use my computer. I have to press the power button to turn it off, then I have to unplug it and plug it back in to get the computer to come on again. I tried 4 times to boot it up with the same results every time. I was going to wipe my computer, but I loose control over the mouse before I can do anything. Can you offer any help?

This sounds to me like something probably went wrong during installation. Please try reinstalling it by following the advice I give in this topic. Note that you should still be able to boot into Safe Mode in order to accomplish this.

Let me know how it goes or if you have any questions.