The first is that you made a mistake during installation and one or more modules aren’t fully seated. If you have max 3 GBs of RAM, then 32 bit should be sufficient for your needs. Ultralight laptops almost never have user-accessible memory.
On Windows 7, things are a bit different. Afterwards, I copied crucial 16GB RAM model number CT16G4SFD8266 (highlighted) from search results and looked for that RAM in and purchased that. And some laptops don’t have RAM slots at all their memory is soldered to the motherboard. Upgrading RAM in a laptops is a trickier subject than with desktops.
