USB keyboard and mouse refuse to work

By gocchin56 ·
Someone please help me, I can't seem to find any solutions for this...

Recently I re-installed Windows XP Pro due to some trojan infection. I decided to install Service Pack 2 again, and after the installation, I restarted my computer. But now my keyboard and mouse don't work. The lights on my mouse and keyboard light up for about 1 second upon starting up of my pc but they die off really fast. I can't even press on F8 to get into safe mode.

I'm totally not an expert in computers so someone please enlighten me on this....

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All Answers

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Buy the sounds of things you need to reapply the USB Drivers

by OH Smeg Moderator In reply to USB keyboard and mouse re ...

Though you'll most likely need a PS2 Keyboard at the very least to do this.


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Are you saying that

by w2ktechman In reply to USB keyboard and mouse re ...

they dont work even for the BIOS (before Windows boots)?
If this is the case, try different ports.
this may change the results. If you have them plugged into a USB hub, remove the hub and see if it helps.
If they are plugged into the front ports (some computers), plug them ino the back instead.
If these do not work, it may be a BIOS setting, so use a PS2 keyboard and enter your BIOS. Look for an option to use USB and/or Legacy USD devices.

If it happens after Windows starts loading, then unplug it and change ports when i boos up. It should recognise the new HW. If it does not, then plug in a PS2 keyboard and mouse. Download and install the ltest UB drivers for your system. Often they are packaged with your motherboard chipset drivers.
If they still fail, try plugging in other USB devices, do they work? What about another USB keyboard/mouse?
If not, look in device manager and see if the USB is listed, or if there is a problem with the USB

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Still not working

by gocchin56 In reply to Are you saying that

Thanks for all your help. I tried out a PS2 keyboard, the lights did appear for a second before they're gone. I'm still unable to use the keyboard and I'm sure that the keyboard is 100% working fine because I tried it on another computer.

As for the mouse, there is light but the cursor on the screen doesn't move.

Yup they don't even work during BIOS. I've tried plugging into different USB ports, in fact all 6, 4 at the back and 2 in the front. I'm really at a lost....

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wow, lets dig deeper

by w2ktechman In reply to Still not working

Since the keyboards (PS2 and USB) fail in the BIOS it appears there is another issue involved. However I am confused about the mouse curser. Lets backrack a bit first.

When the system first boots, does it not stop and say no keyboard is present?
Does it still boot ino Windows?
And have you tried resetting the BIOS to defaults? (probably a jumper on the MB, or remove the battery for 20 min).
Is everything seated well?
Have you sprayed out all of the dust on the inside of the case?
Also, aside from the keyboard, monitor, and mouse, remove anything else attached to the CPU. How does it behave now (please add as much info as you can)?

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thank you very much

by gocchin56 In reply to wow, lets dig deeper

Thank you very much for everyone's help, the problem has been resolved by my brother, I've got no idea how he did it. But the problem now is that during the booting up the keyboard does not work, but once it reaches the welcome screen, it functions... Any suggestions for that?

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If it is a USB Keyboard this is how things are supposed to work

by OH Smeg Moderator In reply to thank you very much

You only have USB Drivers available after Windows Is Installed not before. If you need to enter the BIOS or do something before Windows Loads you need to use the PS2 Keyboard/Mouse Option.


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how to repair the registry entries

by Robert_Hopkins In reply to USB keyboard and mouse re ...

Either mount hdd in another machine or use a PS2 mouse.

-run regedit

-Navigate to HKEY_LOCAL_MACHINE\RemoteOS-HKLM-System\CurrentControlSet\Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}

- Look for a REG_MULTI_SZ value titled UpperFilters. If it doesn't exist, create it.

- Edit the value UpperFilters to read kbdclass. If there are any other line items in UpperFilters, delete them. (note that sometimes the upperfilter will be there, but the kbdclass description won't be. This will cause a failure to load.)

- Navigate down a bit to HKEY_LOCAL_MACHINE\RemoteOS-HKLM-System\CurrentControlSet\Control\Class\{4D36E96F-E325-11CE-BFC1-08002BE10318}

-Look for a REG_MULTI_SZ value titled UpperFilters. If it doesn't exist, create it.

= Edit the value UpperFilters to read mouclass. If there are any other line items in UpperFilters, delete them. (as with the keyboard, if the class isn't there it won't work)

- Now your usb mouse and keyboard drivers should be working again just fine. This is probably the most common cause.

I know the post is old... just putting it on in case it can help someone in the future.

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