Hello, I recently purchased the R7 265 graphics card for my desktop. When I install the new card, all I get is a blank, black screen. I have the most up to date drivers for my graphics as I have a Radeon HD 5450 dinosaur card right now. Any light shone onto this would be GREATLY appreciated!!! My system has 500w ps i3 550 3.2 ghz processor 4 gb ram HD 5450 graphics card and Gigabyte GA-H55M-S2V rev. 1.3 motherboard.