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Front USB 2.0 ports of Antec 300 (and also had the 900)
Gigabyte EP35-DS3L
MSI GTX 460 768MB
Corsair HX520 PSU
Samsung Galaxy S 4G and iPod Touch 4th gen

On occasion, when I plug my phone or ipod into the computer, it seems the graphics drivers fail and the monitor goes blank. After the a minute or two, the drivers will recover and it goes back to normal. I think this happens when I connect the USB cable to the front ports first, then the device, but way less often when the cable is first connected to the device. I think this also happen with my old HD4850 but that was a while ago.

I am wondering what component could be causing the graphic drivers to fail so abruptly. Does this post makes sense?