Windows 7 Help! Display wakes as soon as it sleeps.

I use MPCHC to watch TV shows and movies on my, and I have it set to turn the monitor off when it reaches the end of the playlist. Recently I installed some video editors to try, and now when MPCHC turns off the monitor, it wakes up again after a couple seconds. I uninstalled the video editing software and checked my power profile, but I haven't been able to get my display to sleep like it used to.

Any ideas?

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