Your new Kingston RAM is single sided per the spec.
Height 1.291” (32.80mm) w/heatsink, single sided component
All 4GB RAM listed in the memory QVL list listed are double-sided.
A quick google search gives me the result. So its a hardware limit. You need a double-sided 4GB RAM to work on the motherboard.
Will Intel G41 chipset motherboard support single side 4GB memory module?
Due to chipset support limitation, Intel G41 chipset motherboard will not be able to support single side 4GB memory modules. System will not boot up properly when use single side 4GB memory.