I understand what you mean, but it doesn't seem right that the setting is the issue, because the OP is on the
same computer, just a different install on a different HD, and it allows the computer to work on one install and not another indicates a driver problem as opposed to a BIOS setting....
http://www.vistax64.com/drivers/159576-usb-mouse-keyboard-not-working.html#post739352
I currently have a working install on a second harddrive in this computer. I was wondering if there was any way I can access the other windows install from this one and use it to fix the problem? I guess this also means that the problem is due to a driver because the mouse and keyboard work on the new install.
I think you have the right of it, Ehaic, in that your driver(s) must have gotten corrupted. To fix the first install, I'd first try to see if you can grab / borrow regular old PS/2 style KB and Mouse and then boot into the old install and see if the drivers are fine in device manager.
Failing that, I suggest following the advice in this post -
http://www.vistax64.com/general-dis...rmation-stored-old-hard-drive.html#post740215 (a hint as to how to do this successfully is in the very next post).