Topic: PS/2 Mouse and keyboard errors neilp4453
Date: 28th July- 2005
Are you using a USB Keyboard & a PS2 Mouse? There is a definite problem with this mixture.
USB Keyboards must have LEGACY USB SUPPORT “Enabled” in BIOS setting so you can work the keyboard in DOS environment. There are other issues beside this. I suggest using both PS2 I/O Connections.
Not sure what you mean when you say – Old motherboard USB did not work well - ??? What was not working?
What USB devices do you have?
For time being see if you can get started: Use both PS2 Keyboard & PS2 Mouse . . . .
Check BIOS to have both Mouse & Keyboard LEGACY USB SUPPORT “Disabled/Default”
Describe your USB problem on original motherboard.
Also is your mouse a real PS2 mouse or is it a USB mouse, using a PS2 Adapter??
Refer to 2 of my previous posts on these issues:
Topic: HYBRID MICE (USB/PS2 Mouse)
Date: 22 July – 2005
Hybrid Mice are those designed to plug into 2 types of Ports. There are (2 ) TYPES of Hybrids:
1- (USB or PS2) : The primary connector is generally a “hardwired” USB connector with
an adapter to PS2
2- (Serial or PS2): The primary connector is a “hardwired” serial connector, which is now
generally a (–9 pin DIN) or (older –25 pin ) with an adapter to PS2.
The mouse that is usually boxed in with a system, generally is either a USB or Serial or a PS2 mouse – NOT A HYBRID. The addition of a PS2 adapter does not make it a hybrid. The designed circuitry that detects the type of port which, it is connected to & automatically configures the mouse – make it a Hybrid.
The Hybrid mouse will state on the bottom of the mouse USB and PS2 Compatible or Serial / PS2 Compatible. The Microsoft Intellimouse Explorer 3.0 is a Hybrid Mouse. The rule of thumb is if the mouse did not come with a PS2 Adapter – It probably is not a Hybrid and will not work if NOT connected to the “hardwire” connector’s “native” port.
Keyboards will follow the same rule, but they have different / additional considerations and issues.
Another problem with, USB Mice & Keyboards are, they may not be functional until an USB-aware operating system is loaded. (Win-98-SE – Windows Me – XP – 2000 etc.) They may not function when running DOS; diagnostic software and could have difficulty Posting – “Legacy USB Support”/ BIOS Support is needed/required.
This will be another Topic: >>>for another post<<<<perhaps Keyboard issues>>>>>
Hope this sheds some light on mouse issue,
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Geeks To Go _ Hardware, Components and Peripherals _ Keyboard Issues
Posted by: thedragon632 Jul 26 2005, 04:31 AM
I'm attempting to completely redo my sister's computer, so I formatted the hard drive and have been trying to re-install Windows XP. While trying, it would boot from CDROM and load the setup files, but when it gets to the page asking me to press enter to install, or R to repair, I thought the computer would freeze. However, after installing windows 95 and upgrading to 2000 (after many other attempts at other versions) I have discovered that the keyboard just stops working all together. If I reboot, I can hit DEL to enter setup, use the keyboard in the BIOS and if I use a boot disk and boot into DOS, I can type to my hearts content. But anytime I let the computer load windows the keyboard will not work at all. It is a PS/2 keyboard, I've tried 2 different ones, and the same problem occurs with both. I have checked for IRQ conflicts and cant find any. If I look in the control panel under keyboards and the hardware tab, absolutely nothing is listed. I don't think it's the PS/2 port(s) because the keyboard works when the pc isn't in Windows. I've done this many times before and have never ever seen this problem. Any help would be greatly appreciated.
EDIT: One other thing that may be handy: when upgrading from 95 to 2000, I was able to use the keyboard for most of the 2000 installation, but at the prompt to setup the network connection (domain/workgroup) it quit working again, but I was able to fudge my way through the install with my usb mouse.
Posted by: Jack123 Jul 26 2005, 04:06 PM
Topic: Keyboard Issues
Date: 26th July- 2005
Hello – Need some info on system:
1- Did you upgrade motherboard?
2- What is Name – Model – CPU – Amount of RAM –Legacy USB Support
3- USB Support – (1.1) or (2.0) or (2.0+)
The last 2 words of your post: “USB MOUSE” may be the clue.
Although, You are using a PS2 Keyboard, the fact that you are using a USB mouse may be an issue here. That is why I need to know the info on your system. See if your Motherboard BIOS has LEGACY USB SUPPORT? I have seen issues when mixing USB & PS2 Input Devices. I will go into further details on a later post, but for now lets try 1 or 2 things to get the keyboard to work.
(1) – Is your Mouse a USB mouse or is it a HYBRID Mouse? Look at the bottom of mouse and see what is written. It should give you the: (1-) Name (2-) Model Number & it will either say: “USB Mouse” or “USB 2.0 and PS2 Compatible”. If it is USB 2.0 and PS2 Compatible, then it is a HYBRID MOUSE – You should have a - USB to PS2 – Adapter that came with the mouse.
Use that adapter and plug into the PS2 Mouse port – (only if it is a HYBRID). It will automatically configure itself as a PS2 mouse. Now you will have both your Input devices set as PS2.
(2) – If it is a USB mouse, can you obtain a PS2 mouse to temporarily use? If you can; try using the PS2 Mouse Port?
Now you may have to set BIOS on – with regard to:
(1) – Legacy USB Support –(Either Support or Disable)
(2) – USB settings to what Motherboard supports
Lets try this much for now
Posted by: thedragon632 Yesterday, 12:00 PM
It turns out that the USB mouse was the problem. As soon as I plugged the mouse into the USB to PS/2 converter that came with the mouse, and then plugged the mouse into the PS/2 port, my problem was solved. Thanks for all your help.
CAN YOU SEE A RELATION WITH YOUR PROBLEM?
1- TRY USING PS2 MOUSE AND PS2 KEYBOARD.
2- SET LEGACY USB SUPPORT TO "DISABLED" FOR BOTH MOUSE & KEYBOARD IN BIOS
Edited by Jack123, 28 July 2005 - 10:00 PM.