My girlfriend went onto my computer earlier to turn on iTunes to share some music and the screen started to shake I guess. The top part of the desktop was reflected on the bottom part and it was sort of merged together and shaking. A restart, shutdown and boot up later and nothing changed. I went to set up the tv as a secondary output to see if it was the monitor or video card and it stopped doing it but I'm still wondering what the problem may be.
Anyone have any ideas?
I guess it was like tearing. The bottom half of the screen just constantly flashed and had the top half of the screen overlapping in that spot. It stayed like that until i messed around with the tv setting.
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The shaking you describe sometimes happens when a cell phone is nearby, but it's usually not persistent.