Hello, I wanted to upgrade my laptop from 8 GB RAM (2*4 GB) to 16 GB RAM (2*8 GB). My computer supports max. 16GB RAM. My computer datils befor the upgrade (I can add adittional inforamtion if needed): Operating System: Windows 10 Pro 64-bit CPU: Intel Core i5 3230M @ 2.60GHz 62 °C, Ivy Bridge 22nm Technology RAM: 8,00GB Dual-Channel DDR3 @ 798MHz (11-11-11-28) Motherboard: LENOVO G700 (U3E1) I bought 2 x 8GB DDR3 1600 SODIMM 1.35 V (CT102454BF1505.M16FED) cruical units. When replacing them I get only a black screen, no windows or BIOS or anything. I tried all the variations and found out, that if I use one old 4GB unit and one new 8 GB unit it works and I get 12GB ram, details: MemoryType: DDR3 Size: 12288 MBytes Channels # Dual DRAM Frequency: 798.7 MHz CAS# Latency (CL) 11 clocks RAS# to CAS# Delay (tRCD) 11 clocks RAS# Precharge (tRP) 11 clocks Cycle Time (tRAS) 28 clocks Command Rate (CR) 1T I looke up everything, tried updating BIOS, cheked the settings and now in the dark, I can't fine the solution. A weird thing that occured is before it said (2*4GB): Total memory slots 2 Used memory slots 2 Now it says (4GB+8GB) - I have only 2 memory slots: Total memory slots 4 Used memory slots 2 Free memory slots 2 Does anyone have an Idea wha's going on?
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