Combinations and functions with the windows key, Button on the taskbar. see – Sony PCG-GRX580P User Manual

PCG-GRX510, PCG-GRX560, PCG-GRX560P, PCG-GRX510P, PCG-GRX560K, PCG-GRX520, PCG-GRX530P, PCG-GRX590P, PCG-GRX570K, PCG-GRX550P, PCG-GRX500, PCG-GRX580, PCG-GRX580K, PCG-GRX590, PCG-GRX570P, PCG-GRX520K, PCG-GRX510K, PCG-GRX550, PCG-GRX530, PCG-GRX570, PCG-GRX590K, PCG-GRX530K, PCG-GRX550K, PCG-GRX520P