Usb Ports Stopped working

Hi

I have a Dell inspiron 1100 laptop that operates on Windows Home edition sp2 with a 2.4 celeron processor and 512mb of memory. I turned on the computer today and found out that my USB mouse would not work and also my HP 1300 all-in-one that is plugged into a USB port was not recognized. I suspected it was the usb ports so I went to control panel and then went to system/device manager and the usb ports were running and enabled. I uninstalled them and rebooted. The mouse and printer were not recognized after windows installed the drivers for the usb ports. I am at a loss. What can I do next?
Thank you,
Paul