Monitor Won't Cut On.

Hello,

First HELP Question: I have a DELL monitor and when I hook it up to a laptop it works. But when I connect it to a DELL unit system it don't work. It has a Power Mode message but, I took the motherboard battery out like some people did and they said that works but, it didnt work for me. Like for example when I cut the monitor on while connected to the unit system it turns on and the LED is green then 2 seconds later it cuts off. And when I keep turning it off and on after several times It would give me a Power mode message then shut off immediately and the LED turns orange. PLEASE HELP.

Second HELP Question: I have another unit system AKA the brain of the computer. It doesnt evn turn on. The fan doesnt blow air and it only have orange LED buttons blinking or on. What should I DO ?</gras>