Toshiba Sat Pro A300 mouse pad not working
I have a teachers Tosh A300 that the Synaptics touch pad has stopped working, the laptop went away to Toshiba to repair the keyboard, when it came back they had replaced XP Pro with Vista and the mousepad worked fine. I've used the NTBackup I made of the machine to get it back to XP Pro with all the teachers files as it was before it went away for repair.
Once XP was restored the mouse pad stopped working, i've tried updating the Synaptic driver from Toshiba's site and Synaptics site but still not working, the Mouse Properties shows the Synaptic driver is being used and allegedly working properly but it not, an external usb mouse works fine.
I've even just done an XP repair install to see if that would fix it but no, still a dead mouse pad, the pad works though if I boot pc-dos/ghost usb stick, so it appears to be an XP problem.
I've also tried using devcon.exe to remove the synaptic driver before allowing XP to reinstall it.
Has anyone seen this before, does anyone know if there is a generic PS/2 mouse driver that XP can be forced to use, or any other ideas on how I can get this mouse pad back into action under XP again?