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Keyboard & Mouse Stopped Working

Discussion in 'Hardware' started by dreamspinner3, Jan 27, 2002.

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  1. dreamspinner3

    dreamspinner3 Thread Starter

    Nov 28, 2001
    I have a PC with a K6-2 400mhz CPU on a Biostar M5ALA motherboard with a ALi chipset, 128mb of RAM, 10.2 GB HD running Windows ME. Today I opened up the case & added 128mb more of RAM, made sure that worked, then added a new video-card. After I installed the new video-card, with the case still off, I tested it & everything worked okay.

    So I unplugged everything, put the case back on, & hooked everything back up. I had trouble getting the keyboard to plug in, but it went it. I turned the system back on & found that both the keyboard & the mouse had stopped working.

    I shut it down & removed both, found that the keyboard pins were bent. Mouse pins were fine. I had put the keyboard plug into the correct socket, too. So I went to the store & bought a new keyboard & mouse, brought them both home, installed them---and they didn't work. Again, I made sure that both the keyboard & the mouse were plugged into the correct sockets.

    The mouse was a USB/serial port mouse, so I plugged it into a USB port instead--it worked. Under Device Manager, I could see the system registering a keyboard. No yellow exclamation points. Everything looked normal.

    So I borrowed a working keyboard from my neighbor and tried it--nothing. So I used the Start-Up disk to boot into DOS & the keyboard still didn't work, nor did the mouse.

    So I shut down, removed the new RAM I had installed, started it up again after taking the Start-Up disk out, and while it counted the memory, the HD made a strange ticking noise. The only other time I'd ever heard this clicking noise the system had locked-up & I tried hitting CTRL+ALT+DEL. Keyboard & mouse still didn't work. Last week we noticed the speakers on the system had stopped working too. Replacement speaks worked fine.

    My neighbor thinks that:

    -I shorted something out on the MB when I tried to plug the old keyboard with the bent pins in.


    -The power supply is going out.

    I have removed the new RAM & the video-card & I am going to return them to the store. I think my MB is shot, although I was careful to make sure I wasn't carrying any static while working on the machine.

    Does anyone have any suggestions that I could try? I could put the old video-card back into it. Right now I just have it sitting in the other room, unplugged.
  2. ~Candy~

    ~Candy~ Retired Administrator

    Jan 27, 2001
    My guess is that you loosened the keyboard connector on the motherboard and it's no longer making the correct contact.
  3. Matrikx_


    May 15, 2001
    Try removing and reinstalling the device drivers from device manager. Let plug and play find the devices and reload them. Sometimes you cant see a device in device manager while running in Real mode. Youll have to go into safe mode and view the device manager there. If you see any devices there like a keyboard or mouse then they were not fully removed and the pc is trying to use them. This is sometimes called a ghost device. Try that and let us know.
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