Synaptics touchpad totally dead no response!

Question

I buy a Toshiba A300 S14 then installed a kaspersky internet security 7.0 instead of mcafee which is toshiba partner and then after the installation i noticed that the ilumination light was been disable i manually enable it and solve the problem using toshiba diagnose system but when i disconnect my usb mouse to use the touchpad its totally non responsive and when i use again the usb mouse, only the mouse are running in a good condition but the touchpad nothing happen. when i go to pointing device there is a warning when i click it say"unable to connect synaptics pointing device". only the usb mouse are working again the tochpad nothing happen.I try another trick which is system restore in on the normal configuration also try the the bootable disk i made when i purchase the laptop also nothing happen instead it will erase all file in the harddisk. I try to install also these antivirus to my other laptop which is Sony Vaio VGNCR35M but all are running in a good condition while i am getting some headache to this Toshiba Satelite A300 14S which is automatically uninstall the synaptics touchpad program i try to see it from the program file but its empty. please educate me or give me a brief summary how can i fix these little problem i encountered....or its depends on the Windows Vista 32 bit cause for me 98 second edition and XP is the best design software ever made by microsoft.. thank you and good day.....?