|"how do u reset the RAM?"|
Take it out, then put it back in again.
You could try cleaning the contact edge on the memory stick. I usually use a pencil eraser, then wipe it with alcohol, allow it to dry, then reinstall it. But you can also try inserting it while the contact edge is still wet - popping it in & out a few times should help clean the contatcts in the slot. Make sure the system is turned off & unplugged.