I have a strange problem, and I dont know the cause. but i have a simple solution.
I use my PC primarily to do 3D rendering, so it's quite good (Core i7, 8GB, 650GTX, Windows7-64bit, etc.).
But, i my PC stalls for a moment at regular basis (it's UI is unresponsive for maybe a second). During that time if I have video running, video WILL PLAY without any problems. It's really bugging me, and i don't know why is this happening.
Accidentally, I found a solution, that is not really a solution. If i open Task Manager when I boot up my computer, there is no freezing. As if Task Manager refreshes UI or something more frequently than it wound normally happen.
Software that i use: Adobe After Effects, MAXSON Cinema 4D, etc.
Has anyone have case like this. Maybe it's hardware related, maybe it's a trifle of some sort, but i'am going crazy...
Any insight would me much appreciated.
After Darth Android's answer I realized that I forgot to mention that I use WD VelociRaptor 500 GB for my system drive. I did the test with Crystal Disk Info and with WD Win Diagnostics but they did not find any problems.