G4 Keyboard Issues

The Keyboard on a Quick Silver G4 was accidentaly Disconected before i was able to log in So i plugged it back in and now it wont recognize it .. The REAL PROBLEM is that im stuck in the log in screen and Can Not Input my Password???????

This Is What Ive Tried so far

1.rebbotin = Failed

2.unpluggin all Usb and conections = Failed

3.tested keyboard on other machines The Result was Keyboard was Working Perfect =Fail

4.Used other Keyboards on MAc =- Fail

5. Opened case removed Battery after unpluggin machine of course.... Hel the Little Blk Button inside the machine for 10 seconds Reinstalled battery ..Repluged all conection waited 5 seconds = Failed

6.Same steps as in 5 and added Memory Card removal and disconected all wires and reconected all wires the outcome The same thing Back on Log in with no keyboard and Unable to put my Passowrd, = Failed

I have snowleopard Original install disk wich is no use since i v can not open the cd drive without a keyboard

Can Anyone Help me out here im mot A Technician but i am more familiar with Microsoft Issues And Bios Set Ups etc But i have an iphone Imac and Ibook this quick silver was actually for a Senior center and I left them Dissapointed Yasterday I must fix this today