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usb or ps2 keyboard ? might need to be enabled in BIOS
If you want to use a USB keyboard to access Windows command prompt options, make changes in the BIOS (Basic Input/Output System), or to operate legacy operating systems, you must enable support for the device inside the BIOS.
Shut down the computer and disconnect the USB keyboard. Connect a PS/2 keyboard to the PS/2 connector port on the rear of the computer. Turn on the computer and press the "Delete" key several times as soon as you see the initial boot or company logo screen. Wait for the main BIOS setup screen to appear. Press the right or left arrow keys to move the cursor to the "Advanced" or "Advanced Settings" menu option. Press the "Enter" key. Move the cursor to the "Integrated Peripherals" or "Peripheral Configuration" menu option. Press the "Enter" key. Press the down-arrow key to navigate to the "USB Controllers" option. Press the "+" or "-" key to change the menu option to "Enabled." Move the cursor to the "USB Legacy Support" or "USB Legacy Function" field. Press the "+" key repeatedly until the value option changes to "Enabled." Press the "F10" key to save changes to the BIOS settings and exit the setup utility. Wait until the computer begins to restart and then press the power button and hold it for approximately four or five seconds. The computer shuts down completely. Unplug the PS/2 keyboard from the computer and set it aside. Reconnect the USB keyboard restart the computer. As soon as you see the initial boot screen, tap the "Delete" key several times and wait for the BIOS setup screen to appear. If you are able to access the BIOS setup screen with the USB keyboard, USB support is active in the BIOS.
Keyboards connect several ways. Older systems use a PS/2 connector (round) that plugs into the purple/gray jack on the back of the computer. The mouse plugs into the green jack next to it. If you have a USB keyboard, it plugs into any USB slot. PS/2 connections must be made with the computer off. USB connections work any time. If one slot doesn't work, try another. If the keyboard doesn't work, try another.
I want to help bu I need more details. Does your PC have PS/2 connectors for mouse and keyboard? If YES than connect one PS/2 keyboard and get into BIOS setting and check if USB keyboard and mouse are active. Please post again as a comment to your initial post and give more details.
Is your keyboard connected via USB (a flat rectangular connector), PS/2 (A round connector, often it is purple), or AT connector (a round connector that is roughly twice the size as the PS/2 port for your mouse)? More than likely, it's connected via USB. Especially if it was bought within the last five or six years. If it is a USB keyboard, try plugging it into a different USB port and see if that helps. If that doesn't help then most likely the cord on your keyboard is damaged (kind of like when you have a pair of headphones that will only sound on one ear unless you jiggle the wire). If it's not the USB port (or you have a PS/2 keyboard) I would recommend you buy a new one. You can get one for as cheap as $10.
amm udont need an adapter, the keyboard once usb will plug right in,, if its circular,means its a ps2 port and you need ps2 to usb. No no drivers needed. Or usb to ps2 ,, depends on your needs, But all Usb are standarad stuff.
Hi there. Get the PS/2 keyboard and go back into the bios, make sure all the USB controllers are set to "enabled", save the changes and exit the bios, the computer will restart and your USB keyboard should now work and you will be able to access the bios using the USB keyboard.
what is the connection type of your keyboard? is it PS/2 or USB?
well, if your keyboard is a PS/2 type, there might be a problem with the PS/2 keyboard port, because you've said that it works well with your other PC.
if your using a USB type of keyboard, well try to check if your SYSTEM BIOS supports USB Keyboards. because there are some PC doesnt supports USB keyboard on its BIOS. if it supports, well, enable the USB Devices on your BIOS settings to ON.