System: Dell 8300, 3GB, Radeon 9800XT AGP 256 MB, Win 7 Pro 32, Dell FP2100. Upgrading graphics card to ATI HD 3650 512 MB card. Had to go to 6 pin Y-connector. My issue is that I do not get my screen back after powering on - just remains black. My monitor power light (LED) will go green for 10-15 seconds and then go to amber. Any idea as to what I'm doing wrong?