If the keyboard fails with the supplied OS, then you know.
I can't check further since I can't find the model number, the bios version or any other detail other than it's a Tosh.
I have a Toshiba Satellite laptop with Windows 7 Home Premium installed. All drivers are current and all Microsoft updates have been installed.
Since Windows 7 was installed the keyboard periodically stops functioning (about once a week) for no apparent reason. The mouse still functions but the keyboard can only be restored by rebooting the system. Calls to Toshiba and Microsoft resulted in finger pointing (it's hardware, no it's software).