I have a laptop powered by ATI Mobility Radeon HD3650. The laptop screen appears blank when it is turned on everything else(fan,hard disk, LED, CD drive) is working. I tried many things and now I suspect there is something wrong in the board containing graphics chip. This board is connected to the main board by a connector that appearas to be a miniaturized version of the PCI slot of Desktop boards. Where can I get this graphics board and if its impossible to get that board can I get a replacement for that board based upon its specs?