Ps/2 keyboard not working on windows 8

[brendanm]

Hello, I just built a new computer and I bought windows 8.1 and after installation everything was fine, I downloaded the drivers for the motherboard. And I took to my room so I can use the internet and I can't login because the keyboard won't work.. My usb mouse will though. The keyboard will work in bios but not the login screen.I have no other keyboards.

 

[Traildriver]

Is the PS/2 port enabled in the BIOS?

 

[johnbl]

if the PS/2 port is enabled, try to boot in safe mode (f8) and see if your keyboard works. if it does then you might have a driver that failed to load. I would run
sfc.exe /scannow to check for and repair any corrupt files

 

[boju]

looks like its a Windows 8.1 issue disabling the ps2 support process when detecting a usb device but the keyboard will still work in bios.

http://answers.microsoft.com/en-us/windows/forum/windows_8-hardware/bug-windows-8-ps2-keyboard-not-detected-after/902dc219-6f43-479a-b129-94d4e3985947

People have been going to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt and editing the Startvalue and set it to a hex or decimal value from 0 of 1 so the ps2 service will then should continue to run after rebooting.

But this will be a bit hard if you cannot use the keyboard to even edit, so maybe what i suggest doing will work.

Try logging into windows just with the mouse, either through with no password or Safemode, if you can, just need to get in somehow without keyboard. Open calculator using mouse, click on decimal 1, hopefully you can right click the number and copy. Go to that key string in the registry - edit the 0 value and paste to replace value with the number 1 you copied from calculator - or anything else that has a number 1 you can copy for that matter.

This all depending if you can log in of course, otherwise really no other choice i know of but to use a usb adapter or usb keyboard.

 

[johnbl]

maybe unplug the mouse and the keyboard will not be disabled, then plug it back in after you log in and the mouse will autodetect.

 

[Richman_32]

maybe unplug the mouse and the keyboard will not be disabled, then plug it back in after you log in and the mouse will autodetect.

We are talking about PS2 here and as far as I know PS2 has NEVER been made Plug-n-Play. Even in Windows 8. So Auto-detect is out of the question.

But this will be a bit hard if you cannot use the keyboard to even edit, so maybe what i suggest doing will work.

I for one don't see an issue changing the reg value with only a keyboard. A pc can be used all day long without a mouse.

However, when I navigate to that reg entry the value on my Windows 8 machine is already set to 3 in stead of assumed default of 0.
I am not sure what a value of 3 means. Does it mean that 3 PS2 devices can be used? Is it better than a value of 1 or 2 Or should it be changed back to 1 as suggested.

 

[vgmaxx]

Hello, I just built a new computer and I bought windows 8.1 and after installation everything was fine, I downloaded the drivers for the motherboard. And I took to my room so I can use the internet and I can't login because the keyboard won't work.. My usb mouse will though. The keyboard will work in bios but not the login screen.I have no other keyboards.

Open regedit, go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt
Open start and change to hexa value 0
Worked with me, hope it works for u too 😀

 

[Sublan]

See this Great answer : http://www.gammerzhut.com/ps-2-keyboard-not-working-in-win-8/

 

[thabed007]

looks like its a Windows 8.1 issue disabling the ps2 support process when detecting a usb device but the keyboard will still work in bios.

http://answers.microsoft.com/en-us/windows/forum/windows_8-hardware/bug-windows-8-ps2-keyboard-not-detected-after/902dc219-6f43-479a-b129-94d4e3985947

People have been going to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt and editing the Startvalue and set it to a hex or decimal value from 0 of 1 so the ps2 service will then should continue to run after rebooting.

But this will be a bit hard if you cannot use the keyboard to even edit, so maybe what i suggest doing will work.

Try logging into windows just with the mouse, either through with no password or Safemode, if you can, just need to get in somehow without keyboard. Open calculator using mouse, click on decimal 1, hopefully you can right click the number and copy. Go to that key string in the registry - edit the 0 value and paste to replace value with the number 1 you copied from calculator - or anything else that has a number 1 you can copy for that matter.

This all depending if you can log in of course, otherwise really no other choice i know of but to use a usb adapter or usb keyboard.

hi and thx for this tip, here's my contribution to it, in order to be able to type with your mouse, right click on your task bar, choose "show touch keyboard button", a keyboard icon should appear in the bottom right corner, click it!

 

[Mustak]

>> Open Notepad

>> Paste below text



Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i8042prt]
"Start"=dword:00000000



>> Save it to desktop( in Save dialog box, Name it like "ps2keyboard.reg", with quotes)

>> Exit Notepad

>> Go to desktop >> right click on "ps2keyboard.reg" >> Select "Merge" option. done...!!!


if you cant do above step then download below file, then "Merge" via above step to registry...

https://drive.google.com/open?id=0B_UHQ6TG5Y9EczJONGJZd1RuLU0