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Windows 7: usb keyboard not working

29 Jun 2015   #1
qoosghoune

Windows 7 home premium 64bit
 
 
usb keyboard not working

Hi,

I recently bought a Zalman ZM-K400G keyboard, well, it's a cheap product but it was working fine until I replaced my mobo and cpu and reinstalled windows. Now it sometimes works normal, sometimes works but not during boot (so I can't enter bios settings) and sometimes doesn't work at all.

When it doesn't work at all, Windows device manager sees it as an unknown device and no troubleshooting, uninstalling and reinstalling drivers etc does anything... It looks completely dead; only when I insist on pushing some of the keys its lights faintly glows momentarily (but no effect, it doesn't write anything)...

When I reinstalled windows and then tried to install the mobo drivers, I experienced weird problems (keyboard and mouse didn't work etc.) so I'm still not sure if I installed the drivers or not. (I always have an "unknown device" exclamation on my PC device on "devices and printers" window.)


My System SpecsSystem Spec
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29 Jun 2015   #2
GokAy

Windows 7 Ultimate x64 SP1
 
 

Hey, did you plug them to the USB 2 ports reserved for keyboard and mouse? The top 2 ports on the backplate.

usb keyboard not working-mobo-usb-port.jpg


My System SpecsSystem Spec
30 Jun 2015   #3
qoosghoune

Windows 7 home premium 64bit
 
 

yes, keyboard is connected on top left usb port on the backside
My System SpecsSystem Spec
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30 Jun 2015   #4
GokAy

Windows 7 Ultimate x64 SP1
 
 

You may need to enable legacy USB support and some such in BIOS, can you check?

Also try disabling fast boot if there is such an option in BIOS.
My System SpecsSystem Spec
01 Jul 2015   #5
qoosghoune

Windows 7 home premium 64bit
 
 

BIOS settings are normal, also I can use my other keyboard...

Tried it again, still not working, can't enter BIOS settings; when Windows starting its lights glow a few times but keys doesn't work neither during boot nor later...
My System SpecsSystem Spec
01 Jul 2015   #6
CountryBumkin

Windows 7 Home Premium
 
 

Sounds like it is just broken - and not a setup/settings issue.
These things wear out after a while.
My System SpecsSystem Spec
01 Jul 2015   #7
wasnotwas

W10 Pro x64, W7 Pro x64 in VMware
 
 

Quote   Quote: Originally Posted by GokAy View Post
Hey, did you plug them to the USB 2 ports reserved for keyboard and mouse? The top 2 ports on the backplate.
Could you expand on this GokAy - I thought all usb's were equal. The only usb mouse/kb probs I've had is using usb3 when no usb3 driver is installed (eg during Windows install).
My System SpecsSystem Spec
01 Jul 2015   #8
GokAy

Windows 7 Ultimate x64 SP1
 
 

You are right, they are equal I guess it is just to ensure you connect to USB 2 by using those top ports.

Maybe you can try a USB to PS/2 converter but might end up losing functionality. It should be cheap.

The green one in the picture
http://store.donanimhaber.com/9d/50/...B0437E13C7.jpg
My System SpecsSystem Spec
01 Jul 2015   #9
GokAy

Windows 7 Ultimate x64 SP1
 
 

Checking some forums, exchange mouse and keyboard ports.

Also try a CMOS reset

Read this thread usb keyboard will not work before boot [solved] [Solved] - BIOS - Motherboards
My System SpecsSystem Spec
01 Jul 2015   #10
qoosghoune

Windows 7 home premium 64bit
 
 

Quote   Quote: Originally Posted by CountryBumkin View Post
Sounds like it is just broken - and not a setup/settings issue.
These things wear out after a while.
I bought it one month ago...
My System SpecsSystem Spec
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