Article ID: 206002
When you start your Windows 98-based computer, your Universal Serial Bus (USB) keyboard and mouse may not work correctly, and you may receive the following error message:
Windows did not detect a mouse attached to the computer. You can safely attach a serial mouse now.
To attach a mouse to a PS/2 port, you must first turn the computer off.
This behavior can occur if the USB input device registry keys are missing or damaged.
To work around this issue, use any of the following methods:
Install a PS/2 or Serial Mouse or Pointing DeviceIf you have a PS/2 or serial mouse or pointing device, you can install it instead of your USB device:
Repair Entries in the Usb.inf File
Reinstall Windows 98You can reinstall Windows 98 to resolve this issue, although Microsoft does not recommend this action unless you are severely impacted by this issue.
In order to have a USB-only system, the BIOS must support USB keyboard functionality natively, as it does with PS/2 keyboards, or you may be unable to use a USB keyboard in MS-DOS mode or in Safe mode, because there is no driver support in these two modes. In order to initialize the device, the USB driver relies upon the registry entries for the device. Plug and play enumeration occurs very early when you start your computer, but the Hardware Wizard starts only after you log on, permitting you to be authenticated on your network, and obtain access to your network resources. If, when you start your computer, Plug and Play Configuration Manager detects a USB device, either the Usbd.sys driver file or Openhci.sys driver file is loaded, which automatically turns off BIOS support for the keyboard because a device must be disabled before it can be configured and re-initialized. If the Registry entries for the USB input devices (mouse, keyboard, or composite input device) are missing or damaged, user input is required to get past the "Windows did not detect a mouse" error message that may occur when you start your computer, and the USB driver did not have the initialization information it needed. Composite devices include keyboards with PS/2, USB, or serial mice, or USB hubs built in. If the registry keys are missing or damaged, the drivers for these devices can no longer be found and loaded. Your computer does not search for new drivers for these devices until after you log on to your network so you can get the drivers from the network if necessary. Because the drivers are not loaded, you cannot get past the network logon dialog box.