[michaelmcd33]

I just upgraded my Samsung Q430 laptop from 4 GB of RAM to 8 GB. However, when I look at my computer settings, I'm told that only 7.86 GB of RAM is usable. What happened to the other 140 MB?

 

[Tyree]

Possibly not registering all of the RAM..... not uncommon with OEM units.
See what shows in the Bios.
You'll never miss the 140MB as few games/apps can utilize over 3GB.