It happened as simple as this: I powered down my PC to rearrange some power cables at the nearest wall socket. I plugged everything back in, powered up and NOTHING. The PC starts up as usual, but absolutely no video. I unplugged and re-seated my video card. Nothing. I bought a new card and nothing. I even changed the PSU. I upgraded it from 500 watts to 600. Nothing. Can someone suggest something I'm leaving out?

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