How do I run my anti-virus software in safe mode?

[dimplefaceddoll2002]

I downloaded a free trial version of kaspersky anti-virus software. After I downloaded it, it automatically restart my computer. Now, all I see is my desktop background. NO ICONS and NO START button. How can I run the software? Is my computer fully started up?
I know how to get into safe mode, but how do i run the software?

[Moe heshmati]

press
Ctrl + Alt + Delete
the you would go to task manager
click on new task then select the antivirus file
and double click on it!