Why does my Task Manager show i have 4 open RAM slots? — Acer ...
You don't. Its likely the chipset which is common to other designs supports 4 ram slots. There's only 2 physical ram slots its entirely possible to use the same chipset for 4 sticks.
All Motherboard Slots and Connectors Explained
This article explains what Motherboard RAM slots are, why they are used, and how to use them.
Can I use two 4GB RAM sticks with 1 8GB ram stick on 2 dimm slots ...
One cpu pin is bent and I want to know which cpu pins affect ram slots beacuse pc doesnt boot with 2 ram sticks in slot 2 and 4 only boots when there is one ram on 2nd slot.