Upgraded the hard drive and cpu, but struggling to find the correct RAM. Tried this ddr3 (link below) but it didnt work. Can someone suggest a RAM that might work and is compatible?

https://www.amazon.com/Timetec-1600MHz-PC3L-12800-Unbuffered-SODIMM/dp/B0145WDNF2/ref=cm_cr_arp_d_product_top?ie=UTF8&th=1