I think it belongs in the http://forums.cnet.com/5208-6142_102-0.html?forumID=44&threadID=289912&messageID=2742237&tag=mcnt thread.
I have not added any hardware yet. I'll try to replug and replug the monitor to see if this will solve the problem of blackout. I hope it will solve the problem. thanks a lot! I'll learned a lot but I hope you will continue to advice me till this problem is solved.