My new 7950 blocks the SATA port I was originally using for my hard drive (with the OS on it). I plugged my HDD into a different one and my computer will no longer boot; everything seems to be running fine but my monitor remains blank. My motherboard is an MSI 760GM-E51 (http://us.msi.com/product/mb/760GM-E51.html). The port I was originally using was the upward facing one (similar to the one pictured here http://i67.photobucket.com/albums/h312/bobbydamm/PC006.jpg). Thoughts?