Everytime My Brother Starts His Laptop The Shortcut Key For The BIOS Menu Automatically is pressed.

73CH B0Y

TS Rookie
My brother's laptop is a Packard Bell EasyNote TK87, Like mine, it runs w/ 7 32-bit.

More Detail of problem:
When I click the power button it has the logo and option 'Click F2 for startup menu' I don't click the key and it says 'loading...' and I'll just rebooting the laptop. How to resolve this problem