Dont bump your own thread. (as per forum rules)
What rolli59 said is correct the motherboard doesnt supports CPU's with a TDP (thermal design power) higher than 95 watts, the X4 920 is a 125 watt CPU so it wont work.
The motherboard doesnt have the proper voltage regulators to run a 125 watt TDP CPU. You will need to find a motherboard that supports a 125 watt TDP chip.
If you want to risk it some people have had luck by undervolting your CPU but it is not guranteed to work, and you wont be able to OC.