Most BGA laptop CPUs that I've seen were soldered to the board and then had glue around the edge of the CPU (not near the heatsink)
Just threw an SSD into an older laptop for a robotics project that had would put the computer under a lot of shaking and bumping (bad for a HDD), and it gave a wonderful speed boost (Windows 7 boot, applications, etc), just like admin89 says.
Other than that, there's not much else you can do to it. You can re-purpose it, though, and use it for something else besides a laptop. You can turn it into an in-house NAS (network attached storage) server to store and stream files between computers and media players.
Just threw an SSD into an older laptop for a robotics project that had would put the computer under a lot of shaking and bumping (bad for a HDD), and it gave a wonderful speed boost (Windows 7 boot, applications, etc), just like admin89 says.
Other than that, there's not much else you can do to it. You can re-purpose it, though, and use it for something else besides a laptop. You can turn it into an in-house NAS (network attached storage) server to store and stream files between computers and media players.