Did you try installing the Ricoh MemStick reader Win7 drivers?
http://www.sony.co.uk/support/en/con...5429/VPCJ12L0E

If that doesn't work, then we'll have to find Win10 drivers for the RICOH R5U2xx (R5U230 / R5U231 / R5U241) Card Reader.

I'm assuming you're running 64-bit Windows, since you have 8GB of RAM now.