I recently purchased Toshiba Satellite A100 which is running Windows XP. It was provided with two 256MB RAM but the specification clearly mentions that maximum 2GB ram can be supported by the laptop. So I purchased 1GB RAM and installed it in my laptop. Now the 1GB ram is getting detected but original 256MB say is not showing. Do I need to set up anything or do something to make it visible again? Please help me solve this issue. Your suggestion is always appreciated. Thank you in advance.