Now a days there is a big problem for a newbie who bought a new laptop and when try to press F5 for refresh it did something else 🙂 due to Action keys (Function keys) Enabled.
Dont worry about that you can easily disable those function keys so that F1 – F12 will perform normal windows keys functions instead of multimedia functions.
1. Go to BIOS (when laptop is restarting press F10 or in some laptops F2 or F1)
2. Move to System Configuration
3. Action Keys