Screen won't work

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Wednesday April 30, 2014
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April 30, 2014
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I bought a Dell Inspiron 660 a while ago because I wanted a gaming computer, and I was going to improve the hardware on that computer. A while ago (almost a year ago), I upgraded the graphics card to a gtx 660 ti and upgraded the power supply to a 600W thermaltake. Everything worked fine, until just recently.

I bought a new gaming case, the NZXT Phantom mid-tower case. Everything was compatible, so I moved all my hardware from the old case into the new one. Everything is plugged in correctly, and everything starts up, but my screen won't display.

I have both a monitor and a flatscreen TV that I use for my computer. I tried a different combination of connecting it. I tried using the VGA and HDMI cord from the graphics card to both the monitor and the TV, and I also used both cords to both the monitor and TV from the on-board Graphics that is built in to the motherboard.

What else could I do to try to fix it?