|You reinstalled Windows but not the device drivers. There's only a limited amount of drivers included on the Windows CD, the rest have to be installed manually. Drivers should be updated occasionally as well.|
If you don't have a separate drivers CD, go to the Dell site & download the individual drivers for the Inspiron 1300.
Copy them to a disc or thumbdrive, then transfer them to a folder on your PC & install from there...or you can just install directly from the CD/thumbdrive.