Originally Posted by JCB
do you know the make and model of your motherboard?
Intel core duo 2 uses socket 755
Pentium 4 uses 423, 478 or 775
so your motherboard might not support it
I have seen inter core 2 Duo on socket 755
How I know is because my motherboard is socket 755 and it can support pentium 4, dual core, quad core, core 2 extreme and core 2 duo