Dell Inspiron 3521, factory installed Windows 8.0, no previous hardware changes.
Installed memory is 4 GB, in one module occupying one of the 2 memory slots.. We purchased from Crucial an additional 4 GB module, part number CT3964807, description "Upgrade for a Dell Inspiron 3521 system, 4 GB DDR3-1600 SODIMM 1.35V CL11".
Speccy describes the installed memory as single channel DDR3, 4096 MB, DRAM frequency 798.1 MHz, CL 11, cycle time 28 clocks, etc. The new memory board looks exactly like the one already installed, and fits the slot perfectly.
So what do I need to do to persuade the system to recognize the additional memory? I went through the UEFI boot menu without finding anything about detecting memory? What am I doing wrong?
Thanks for enlightenment!