Ps2 keyboard not working

[rohansamal]

my ps2 keyboard is not working . it flickers when i start the pc but after that it is off. i have tried rebooting and replugging the keyboard but no use 🙁.
please help

 

[tfitch11]

Ps2 keyboards arent worth troubleshooting end of story. It would be like troubleshooting your VCR- its dead technology.

The Ps2 connectors are notorious for crapping out time and time again whereas USB keyboards and mice are much more reliable. Even the Ps2 to USB or USB to Ps2 converter connectors are notorious for crapping out BECAUSE IT INVOLVES PS2.

Also Mr. Mortuuspus if you read his posting closely you'll notice he starts out by saying "it flickers when i start the pc but after that it is off," implying he has it plugged in but then ceases operation AT BOOTUP.

So rohansamal...I still recommend...get a new keyboard.

OUCH! I am having this same problem on a Model M Keyboard. "Not worth Troubleshooting?" Wow! Thats kind of insulting to the Model M fanatics out there; this keyboard is 20 years old and hands down beats any keyboard on the market today.

 

[tfitch11]

>Got same insane problem and no USB keyboard around. Luckily had a laptop.... do this: make xxxx.bat file and >put there line "regedit" and run the .bat (from USB stick using USB mouse) and edit In >HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt, edit the Start value and set it to a hex >or decimal value of 1. -> Reboot and P/S2 works now.

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Hi PS/2 keyboard users, I signed up to post this just because it is so frustrating.

I have a different solution. The BIOS handles the PS/2 natively, but it's quite flaky, so here is what I have to do to key my Model M to work (One of 7 I have which I hope will last me the rest of my life) on Win7 (my (old) Terabyte Linux backup software sees the PS/2 just fine and doesn't see the USB 3.0 at all.):

Win 7 wouldn't let me edit that i8042prt value. Turns out there's something funky in the BIOS.

My motherboard is a new MSI Z87-G45 with the stupid fancy BIOS

To get Win7 to use PS/2 keyboard, boot to BIOS (have to perform each time you change a piece of hardware, SATA, Graphics card, etc.) Procedure:

1. shutdown.
2. Plug in both USB keyboard and PS/2 keyboard
3. Boot to BIOS (hitting del on my USB keyboard, because it won't see the PS/2 keyboard)
4. Hot unplug the USB keyboard while in the BIOS
5. Exit the BIOS with the "Save and Exit" BIOS option (via USB mouse)
6. Win7 can see the PS/2 keyboard upon reboot.

This appears to be necessary every time the BIOS see a new SATA device. It does not appear to be necessary when you plug in a new USB device.

-- Joe

P.S. "Get a new keyboard" is really not helpful.


[/quotemsg]


Thank you for this, I will try this after the catastrophic Win10 update rendered my ModelM almost unusable (having to remove USB Keyboard Device Drivers upon every boot from device manager). and I agree, the suggestion to "get a new keyboard" is inappropriate here and the PS2 being "unreliable and outdated" comment made me cry.. well not me, my keyboard crried but still also equally uneccessary.

 

[Programming4Life]

Ps2 keyboards arent worth troubleshooting end of story. It would be like troubleshooting your VCR- its dead technology.

The Ps2 connectors are notorious for crapping out time and time again whereas USB keyboards and mice are much more reliable. Even the Ps2 to USB or USB to Ps2 converter connectors are notorious for crapping out BECAUSE IT INVOLVES PS2.

Also Mr. Mortuuspus if you read his posting closely you'll notice he starts out by saying "it flickers when i start the pc but after that it is off," implying he has it plugged in but then ceases operation AT BOOTUP.

So rohansamal...I still recommend...get a new keyboard.

+



OUCH! I am having this same problem on a Model M Keyboard. "Not worth Troubleshooting?" Wow! Thats kind of insulting to the Model M fanatics out there; this keyboard is 20 years old and hands down beats any keyboard on the market today.

 

[junkeymonkey]

thing is a ps/2 port is there as a kind of fail safe for the keyboard and mouse to work even just under bios native before any os is installed or drivers like some times you need for the usb ports to work [usb keyboard with a ps/2 adaptor still may not work ] needs to be a true wired ps/2 keyboard or mouse

 

[tfitch11]

After the March 8 2016 update, I had the same problem again.. Finally fixed this by disabling Legacy USB Support in BIOS. Keyboard is back to normal! The PS/2 lives on!

 

[Romanticapped]

Thanks to everyone who posted on this, to the nay-Sayers who say ps/2 is dead misses the point, that is the default backup port for keyboards and mice, often the only way to get into your computer to work on fixing issues when the usb ports fail or other issues come up. When that fails and the usb fails you are pretty much screwed, even though the rest of the computer may work fine, no point if you cant interact with it. PS2 is the go-to backup access point and when it fails, it can be a real pain. Just because something is old does not mean it is not better than the new, and if it is such a dead technology why do many new MOBOS still have it? Its a service access issue to my way of thinking. Sorry I just felt like a little rant. I get peeved by 'just get a new one' answers. The sad solution is that you have to manually reactivate the port on some systems after using a different style keyboard, and that should not be the case, especially since most people don't know how to do that, and cannot when their USB keyboard stops working.

 

[tfitch11]

Thanks to everyone who posted on this, to the nay-Sayers who say ps/2 is dead misses the point, that is the default backup port for keyboards and mice, often the only way to get into your computer to work on fixing issues when the usb ports fail or other issues come up. When that fails and the usb fails you are pretty much screwed, even though the rest of the computer may work fine, no point if you cant interact with it. PS2 is the go-to backup access point and when it fails, it can be a real pain. Just because something is old does not mean it is not better than the new, and if it is such a dead technology why do many new MOBOS still have it? Its a service access issue to my way of thinking. Sorry I just felt like a little rant. I get peeved by 'just get a new one' answers. The sad solution is that you have to manually reactivate the port on some systems after using a different style keyboard, and that should not be the case, especially since most people don't know how to do that, and cannot when their USB keyboard stops working.

**HUGS!!!**

So I can't recall what actually fixed this for me.. I believe it was a setting in my BIOS. Since then, I have actually replaced my keyboard... with an OLDER one from 1985 (manufactured 2 days before my birthday, so that was an incredible find). Regrettably I had to USB mod it as it was built to function off of a terminal only. I do still have another PS/2 keyboard from 1987 that I will restore and keep in otherwise original condition (yes, I'm keeping PS/2 connector). If anyone happens to read this, I also learned that fast boot + USB modded keyboards do not mix and will land you at a BSOD on boot! I am happy that you were able to point out to all the nay-sayers that PS/2 is the backup!

 

[tfitch11]

Thanks to everyone who posted on this, to the nay-Sayers who say ps/2 is dead misses the point, that is the default backup port for keyboards and mice, often the only way to get into your computer to work on fixing issues when the usb ports fail or other issues come up. When that fails and the usb fails you are pretty much screwed, even though the rest of the computer may work fine, no point if you cant interact with it. PS2 is the go-to backup access point and when it fails, it can be a real pain. Just because something is old does not mean it is not better than the new, and if it is such a dead technology why do many new MOBOS still have it? Its a service access issue to my way of thinking. Sorry I just felt like a little rant. I get peeved by 'just get a new one' answers. The sad solution is that you have to manually reactivate the port on some systems after using a different style keyboard, and that should not be the case, especially since most people don't know how to do that, and cannot when their USB keyboard stops working.

**HUGS!!!**

So I can't recall what actually fixed this for me.. I believe it was a setting in my BIOS. Since then, I have actually replaced my keyboard... with an OLDER one from 1985 (manufactured 2 days before my birthday, so that was an incredible find). Regrettably I had to USB mod it as it was built to function off of a terminal only. I do still have another PS/2 keyboard from 1987 that I will restore and keep in otherwise original condition (yes, I'm keeping PS/2 connector). If anyone happens to read this, I also learned that fast boot + USB modded keyboards do not mix and will land you at a BSOD on boot! I am happy that you were able to point out to all the nay-sayers that PS/2 is the backup!