Install DDR3 memory on already-installed DDR3L memory laptop

Same as title, I have a laptop (HP Folio 9470m) with 4Gb of DDR3L memory stick installed.

Also, I have a spared memory stick (DDR3 4Gb), still work as tested on another device.

Thing is, when I try to add DDR3 memory to HP laptop (to expand the available memory of the device), the system would not run. Only fan and some sign lights are on.

Change to only DDR3 memory stick return the same result as above. Only when install back the DDR3L memory stick would bring the system run again.

Would there be a way to add DDR3 memory stick to my system? As I checked, my system can work on both DDR3-type and DDR3L-type memory stick.

Pardon my poor english; it not my main tongue.