On the other computer it got a little weird when after replace the PSU, Windows XP SP3, found a new device...the raid driver. That is when I discovered the Raid had been "turned off". I turned it back on and then Windows found a new driver...the raid driver. Long story short the user wanted to do a fresh install, so I don't know if the raid was still working or what.
Back to my computer. Can I/Is it safe to replace the CMOS battery while it is running (powered on and running) and/or plugged it but powered off, assuming the power supply will still be leaching some power to keep the saved settings? I really do not want the fun experience of playing with the raid again while sensitive data is already on the HDDS.