Hi guys, I just got a PCI-E x1 graphic card: HIS Hightech H155HMF256EDDE1LN-R Radeon X1550 512MB(256MB on board) 64-bit GDDR2 PCI Express x1 Low Profile Video Card - Retail For my Dell Dimension 3100 Desktop. IT has one PCI-E x1 slot. However, after i set up and install all the required software and driver. My monitor shows a black screen. Does it mean that my desktop is not compatible to my newly bought graphic card?