This is a Dell 4500 running windows 2000 professional. The system would not boot up after sitting idle for about 4 months. I finially used my ERD Commander cd to wipe hard drive clean and start over as nothing of value was on hard drive. After wiping Hard Drive , it reloaded windows 2000 but my mouse does not work. I tried to use my dell driver disk to reinstall all drivers but it now does not recognize this PC as a Dell. How do I get my mouse to work again?