Computer wont start when 12V CPU connector is plugged in

Hello.
First of all, I'am from Norway so my english is perhaps not that impressive :P
I recently decided to upgrade my computer a bit and for now, these are the parts that are installed (only the nessecary parts for a startup is installed for now. Installing the rest as I see things are working) :
MSI PM8PM-V
Intel Core Duo 2 E6300
512 DDR2
120gb western digital
Geforce 6800 256MB
Now to the problem. On the motherboard there is a plug that is for (quote from the manual) "This 12V  power connector is used to provide power to the CPU" so in my little world this is an important thing to have. The problem is that if this plug is used/connected the computer does not start at all. Nothing happens what so ever. However if the plug is not connected the computer starts and is running fine but the monitor is dark and it's acting like it's in sleepmode (the monitor-LED is yellow not green as it is when it's active). So in other words I'am not getting any further...

Quote from: Eirik87 on 10-December-06, 00:53:31
Hello.
First of all, I'am from Norway so my english is perhaps not that impressive :P
I recently decided to upgrade my computer a bit and for now, these are the parts that are installed (only the nessecary parts for a startup is installed for now. Installing the rest as I see things are working) :
MSI PM8PM-V
Intel Core Duo 2 E6300
512 DDR2
120gb western digital
Geforce 6800 256MB
Now to the problem. On the motherboard there is a plug that is for (quote from the manual) "This 12V  power connector is used to provide power to the CPU" so in my little world this is an important thing to have. The problem is that if this plug is used/connected the computer does not start at all. Nothing happens what so ever. However if the plug is not connected the computer starts and is running fine but the monitor is dark and it's acting like it's in sleepmode (the monitor-LED is yellow not green as it is when it's active). So in other words I'am not getting any further...
What PSU are you using?
What is the specs amps of  the PSU?

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