Opeth wroteI would be more than happy to buy the 4GB of RAM off you but i'm not sure if it fits on my laptop.
As I've written above, the RAMs, board and CPU are sold and not available anymore.
Also laptop rams come differently, here's what a desktop DDR3 RAM looks like :
And this is what a laptop DDR3 RAM looks like:
As you can see there are a lot of differences between the two. Obviously, laptop RAMs come smaller. Generally, laptops use different hardware then desktops whether it's the motherboard, HDD or DVDRW, everything is different.