Use FREE & FREEWARE software
Clock Stopper: Open Trial Software any time
Clock Stopper is a small freeware software to halts computers internal day-time clock. Many trial programs has limited time period. After that time the program is no longer unusable. This will fool many programs into thinking that time never expires and user can open that software after over trial time.
Download Link: http://www.brothersoft.com/clock-stopper-186572.html