I moved my X51 R2 parts (cpu,ram) to my new computer and sold the old video card. Recently, I wanted to boot up and use my X51 R2 so I decided to test it with it's old CPU and if its working, to buy one for the X51 R2. But unfortunately, there is no video output using integrated graphics.The front case fans starts running very loud and everything seems fine except that and the black screen. My question, is there a possibility to run the computer with discrete card and have display? Or there is a motherboard failure or something like that. Also the lights are solid yellow if that even matter.