First, do you have a USB mouse? PS/2? Or Serial?

Second, have you tried removing the CDR/RW to see if the problem resolves?

Third, step us through the process you followed to install the CDR/RW.

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1999 Contour SE
2.0 Zetec
KKM Sound Enhancer (soon to be tossed aside... D DAVIS)
Front Bra
Beautiful Girlfriend for a passanger