Dell Inspiron 9300

This comes up when I turn my laptop on. I just got this laptop for Christmas. I was running Microsoft Works & Money 2003, the next time I use my laptop I get this message. I've done this but still have no idea what to do. HELP

The device in the system modular bay cannot be identified. It may not be completely inserted or mayhave some other problem. Please read and complete the following steps in order.

1) Press the device completely and firmly into the bay.

2) Power off the system.

3) Press the power button to retry detecting the device.

Press ESC to ignore error and continue.