Digital Timers
 

I have two digital timers, both work on chirstmas lights, but eather one when i try to use it with my pcs, they freeze up at the exact time they are suppose to come on, and if you unplug the timer and let it drain power, and then plug it back in it works, but as soon as it goes to turn on the light it freezes. Any ideas?? I have two non-digital timers also although both of them really dont work well on anything, and im leaveing town for 4 days, and i really dont want to be guessing if the lights came on or not. Any information would be great, thanks

Kyle