I replaced the LCD on a Presario X6000. Initially, it powered up with no video. I began disassembling it and now I can't power it up at all. I'm guessing it might be the LED board, the connectors, or a short circuit. The problem is, how can I troubleshoot it? Here is a link to the service manual, which better illustrates what I'm referring to: http://h10032.www1.hp.com/ctg/Manual/c00778754.pdf I really need to resuscitate this computer. Thanks for any help anyone can offer.