My wireless keyboard needed batteries so I tried using an older keyboard which is not USB. It did not work so I plugged it out and found some batteries for my USB wireless keyboard and got it going. After rebooting I noticed some kind of change with my system. My express gate was not installed anymore and I keep getting the found new hardware every time I boot up. In the device manager, I have an unknown device listed with the yellow ?. I tried inserting my motherboard and video card CDs to reinstall drivers but no dice. Other than that my system seemed fine so I decided to ignore it and take a flight. I found out my flight stick is not listed anymore and my system will not pick it up. When I plug it in, I get found new hardware and then it says it is installed and ready to use, but it does not show up in the collaboration screens. Not FSX or from control panel. Could use some help with this one. I wonder if trying to use that older keyboard screwed something up. Thanks in advance.

System:
Asus P5QL PRO Motherboard
Intel Core 2 Quad Q6600 @ 2.40 GHz
2.39 GHz, 3.25 GB of RAM
EVGA Nvidia GeForce 9800 GT 512MB DDR3
Windows XP