To get your Toshiba function keys (Fn) working on Windows 10 (64-bit), you typically need the Toshiba Value Added Package. This package contains the Function Key Utility and Flash Cards Support Utility, which provide the on-screen display and manage hotkey shortcuts. 1. Download the Necessary Utilities
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Install the Utility: Download and install the Toshiba Function Key Utility (64-bit) and restart your PC. Troubleshooting & Mode Switching toshiba function key utility windows 10 64 bit
Enter your model number. Select Windows 10 (64-bit) from the OS dropdown. If your model is older and does not list Windows 10, look for Windows 8.1 64-bit—many versions work on Windows 10 as well, but check user reports. To get your Toshiba function keys (Fn) working