[Solved] Windows 7 Screen saver not working

The problem:
I was having trouble with my screensaver coming on, I have it set for 10 min. and it wasn't coming on. I played around with the screensaver settings and play around with the power saving settings none of it seemed to help.

The solution:
The thing that actually solve the problem believe it or not was my cordless mouse.
It was getting kind of old and I was thing about replacing it anyways and apparently it was keeping my screensaver from coming on. I replaced it and now my screensaver works. I just want to post this in case anybody else is having the problem, it could be their wireless mouse. Hope this helps somebody it sure pissed me off.

I had a similar problem, it turned out it was my keyboard, the pause key was somehow stuck on. This would not allow my screensaver to come on, I had to use a program that showed what keys were currently being pressed which showed me that the pause button was on, I change my keyboard and my screensaver now works.

Yes sometimes there's more than one cause to the same problem, thanks for posting on here, you never know if somebody needs an alternative solution.