If the lights on the keyboard come on momentarily during startup but do not work after the operating system has finished loading, restart your computer again and go into your computer’s BIOS. If they turn on momentarily, you now know that the computer is capable of communicating with the keyboard. The only option you probably have is to replace the keyboard. If the connection is tight, then you may simply have a keyboard that is not working or has burned out after many hours of use. plugged all the way in to the PS2 port on your motherboard). If the lights do not turn on, check the connection between the keyboard and the computer to be certain that the connection is tight (i.e. Most modern keyboards have three LED lights to indicate that the Num Lock, the Caps Lock, or the Scroll Lock is on. Your first step in troubleshooting a keyboard that is not working at startup is to determine whether the keyboard itself or the keyboard’s PS2 port is causing the problem. Troubleshooting a Keyboard Connected to a PS2 Port They will work for Windows XP, Vista and 7. The following directions should help you troubleshoot your keyboard problems.
With the advent of the USB port, connecting peripherals to your computer became easier but also became less reliable as USB ports can be finicky. Round in shape, the PS2 port has been the standard peripheral connector for several decades. A PS2 port is a connector on your motherboard that has several pins sticking out of it. Your keyboard attaches to your computer in one of two ways. Sometimes the keyboard just will not respond after startup and needs to be either fixed or replaced.
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