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PS2 Keyboard not recognized on cold boot in Windows 7

Anonymous
2011-04-24T18:41:16+00:00

I recently purchased a new Cyberpower PC with Windows 7 Home Premium pre-installed. It works fine except for the keyboard. The keyboard is an IBM Type M with a PS2 connector directly connected to the keyboard PS2 port on the ASUS P8P67-M motherboard with the B3 revision. The keyboard works perfectly in opening the BIOS and navigating around, but when I continue to the Windows log-in screen it is Not detected. If I use the on-screen keyboard to log-in Device Manager does not show any keyboard. If I do a warm reboot, either from inside Windows or from the log-in screen, the keyboard is detected and works perfectly.

I checked for updated drivers for the keyboard but Device Manager says that I have the newest versions. All updates for Windows 7 have been installed.  I assume that this is a Windows 7 problem as the keyboard never had any issues with other computers or OSes and it works fine in the BIOS and in Windows 7 after a warm reboot.

Where do I go from here?

Windows for home | Previous Windows versions | Devices and drivers

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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  1. Anonymous
    2011-12-30T18:47:45+00:00

    To check the IRQ assignments I logged in using the on-screen keyboard and then went to the Device Manager and then selected View Resources by Connection.  Expanding the IRQ tab shows which interrupts are being used.

    I just did this with the PS/2 keyboard on a cold-boot and it shows nothing using that IRQ so I guess that is a dead end.

    So we are back at the question of what is done differently in a cold-boot versus a warm-boot.

    I am thinking the problem is a timing issue in where the older PS/2 keyboards are not given enough time to respond before the OS decides they aren't there.  Maybe the driver is loaded in a warm-boot before querying the IRQ and the keyboard can reply in time while the driver in a cold-boot is not loaded until the timer starts and there isn't enough time to reply.

    That's a question for Microsoft to answer, if they are really interested in solving this issue.  I think they may have decided since there is no problems with USB keyboards or newer PS/2 keyboards there is no problem.  There is no need to spend time fixing something for "legacy" devices.

    2 people found this answer helpful.
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  2. Anonymous
    2011-06-10T14:19:44+00:00

    Does the PS/2 keyboard "respond" when you try to access the BIOS setup screens?  If not, then the PS/2 keyboard is not set to ON / ENABLED in the BIOS.

    2 people found this answer helpful.
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  3. Anonymous
    2017-03-20T09:22:48+00:00

    After struggling on this one for ages, I stumbled upon a solution.

    Enable windows 8 fast boot on BIOS, get your PS2 working after a warm boot, and bingo!Even with only windows 7 installed, it seems to provide the necessary speed boost to get the PS2 initiated.

    Hope that helps someone

    1 person found this answer helpful.
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  4. Anonymous
    2011-04-25T17:25:56+00:00

    While I can select safe mode from a cold boot, I can not use the keyboard to enter the password at the login screen.  From a warm boot everything works.

    This has been the normal mode of operation since I got the computer new a couple of days ago and I have not made any changes to the hardware since then.  Since the computer has an Intel 2600K processor running at 3.4 GHz I wonder if the problem is that it is booting too fast for the keyboard drivers to load properly on a cold boot and it needs some way to delay it.

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  5. Anonymous
    2011-04-25T13:59:08+00:00

    Hi,

    ·         Do you remember making any recent changes to computer?

    I would suggest you to try steps below:

    Method 1:

    Try in safe mode follow the steps below for safe mode:

    a.       Restart your computer if it is powered on.

    b.      Tap the F8 key after your computer initially powers on.

    c.       Once you see the Advanced Boot Options menu you can stop tapping.

    d.      Use the up/down arrow keys to highlight your selection.

    e.      Select Safe Mode and press Enter.

    f.        You should see drivers loading, and then please wait.

    g.       You should then be at the Welcome Screen.

    h.      Logon to your computer using an account with Administrator privileges.

    Method 2:

    After restarting computer in safe mode restart computer in clean boot follow the steps in the link below for clean boot:

    http://support.microsoft.com/kb/929135

    Follow the steps from the article to “Reset the computer to start as usual”, after performing the clean boot troubleshooting.

    Hope this helps.

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