F12: Boot Menu Pressing the "F12" key during startup pulls up the Boot Menu. This menu lets you boot your computer to an external device such as a disc or USB drive. The change will only apply to the current boot.Every company that design computer, they set their own key for boot menu or system BIOS and that’s how hundreds of our visitors ask us about boot menu options for their devices. So, I now you can find your boot menu option keys with system bios for all laptops and desktops.
Oct 31, 2010 · The PSA (Fn key + power button) alternate boot method forces a thorough POST test, which provides a more accurate lock LED no POST code. The LED's are Num lock - Caps Lock - Scroll Lock They may appear different on your model than in any of the pictures below.