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My computer does not detect my keyboard

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9 replies

by mark_b

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I have an old PC, I replaced my old mouse with a new one and after I booted up my computer the mouse pointer do not work and my keyboard too. my system is a pentium 3 and I only started using WindowsXP. since then my computer boots but it does not detect my keyboard so I can't use. I already tried using other keyboard but they did not work too, but when I plugged my keyboard to another computer, it works ok on other computer. some say that I should replace my motherboard because it might be theproblem.

9 replies

by thechas

Since the problems started with the new mouse, I suspect either a problem or an incompatability with the new mouse.
Have you tried plugging the old mouse back in?
Or no mouse at all?

Does the keyboard work durring the POST?
Can you enter BIOS settings, and manuver through them using the keyboard?

One thing to try, is to swap the keyboard and the mouse cables on the back of the PC. Double check which way is suppossed to be correct, and try both ways. The keyboard is usually the one closest to the motherboard on an ATX board.

If the system works with the old mouse. Try removing the mouse in device manager, and then shutting down. (You can navigate Windows using the Windows and Tab keys on the keyboard.)

Change the mouse, and try again.

Another thought, does the new mouse require a special driver? Double check the mfg documentation and installation instructions.

by shanghai sam

I already tried it but since then the old mouse did not work too. I could not enter the BIOS because it does not detect the keyboard. If I pulled the plug of the keyboard from my computer, my computer still boots but there is no keyboard error even though I disconnected the keyboard. The first time I plugged the mouse I did'nt even have the chance of installing the driver because of what had happened. Anyway, thanks for having the time to answer my question.

by chud

As per Chas - it sounds to me like you may have plugged the mouse into the keyboard socket and vice versa...

by shanghai sam

I also tried switching the plugs into their sockets (out of curiosity)and back to their original sockets and still it did not work either. Thamks for answering my question.

by =t=

how bout XP ?? this could be the main problem ! some device are not compartible with XP , you have to download special driver for XP, look at hardware manufacturer web site and find a driver there and install it ...

by shanghai sam

I think that Windows XP will install the generic driver for the device in its initial use and will prompt the user to install the device driver of that device.

by thechas

At this point, I am starting to agree with your friends that you may have a motherboard problem.

2 things that you can try first;
Set the jumper to clear the CMOS memory.
Boot the pc,
shut down, set the jumper back to normal.

If there is nojumper,
remove the CMOS backup battery, and leave the computer unplugged for at least 1/2 hour.
Then boot and see if the keyboard functions.

2. See if you can borrow a USB keyboard. If it works, the problem is with the PS2 sockets, or driver IC on the motherboard.
I would then start planning a system upgrade.

by mark_b

I tried resetting the CMOS and after that my computer tells me that the BOIS setup has been set to default setting and since my keyboard does not work I only end up with that error message on my screen. I have not tried using a USB keyboard but I will try it when I can acquire one. Right now I am planning on upgrading my system, if you have any suggestions on what type of system I can upgrade to, you can email me: maq05@hotmail.com because I havent finalized my decision yet. thanks in answeringmy question.

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