Maximum RAM restrictions

Solution 1:

The Maximum amount of memory is also determined by OS, in your case depending of your Windows 7 Version:

Home Basic     : 8GB
Home Premium   : 16GB
Professional   : 192GB
Ultimate       : 192GB
Corporate      : 192GB

Comparison Chart Windows 7

Also is good to check what the brand says.

About ET1862 Here is the datasheet it says:

Maximum 4 GB

And is determined also for CPU:

Here is the datasheet of your CPU it says:

Maximum 16 GB

for your Motherboard Specifications too it says:

Maximum 16 GB

Here is a link for yours: