Hi,
I have a desktop that seems to have recently developed a problem with using USB devices. Whenever any USB device (with a few exceptions, I'll elaborate below) is plugged in while Windows is running, the computer would completely freeze and become unresponsive to all input, requiring a hard-reset to make it usable again. If a USB device is plugged in during boot, the boot process doesn't go any further than the scrolling Windows screen, after which it gets stuck on a black screen.
This seems to happen for any USB drives, printers, and even my camera. The only devices which don't cause the computer to behave this way are my wireless USB mouse and keyboard receiver, as well as USB smart cards used for authentication for some Chinese banks.
I've tried the following to no avail:
1. Plug in a PS/2 keyboard to make sure that Windows was actually frozen, not just unable to read from the USB ports. Windows seems to actually be frozen.
2. Boot into Ubuntu on the same machine from an Ubuntu installation DVD to make sure that the problem is specific to Windows. Ubuntu seems to have no problem using the USB ports with any device.
3. Uninstall all drivers under the "USB" category in device manager and let Windows reinstall them.
4. Disable the drivers for the Chinese bank smart cards.
5. Ensure that all Windows Plug and Play services are set to automatically start at boot.
6. Boot Windows in safe mode with command prompt and in diagnostic mode. When booting in this fashion, boot gets stuck after indicating that MUP.SYS is being loaded.
I've read that MUP.SYS is rarely the problem when something like this occurs: it's merely the last driver to load, and after that Windows starts doing some things that it doesn't report.
At this point, I've exhausted everything I can think of. Any help on this problem would be highly appreciated!
I have a desktop that seems to have recently developed a problem with using USB devices. Whenever any USB device (with a few exceptions, I'll elaborate below) is plugged in while Windows is running, the computer would completely freeze and become unresponsive to all input, requiring a hard-reset to make it usable again. If a USB device is plugged in during boot, the boot process doesn't go any further than the scrolling Windows screen, after which it gets stuck on a black screen.
This seems to happen for any USB drives, printers, and even my camera. The only devices which don't cause the computer to behave this way are my wireless USB mouse and keyboard receiver, as well as USB smart cards used for authentication for some Chinese banks.
I've tried the following to no avail:
1. Plug in a PS/2 keyboard to make sure that Windows was actually frozen, not just unable to read from the USB ports. Windows seems to actually be frozen.
2. Boot into Ubuntu on the same machine from an Ubuntu installation DVD to make sure that the problem is specific to Windows. Ubuntu seems to have no problem using the USB ports with any device.
3. Uninstall all drivers under the "USB" category in device manager and let Windows reinstall them.
4. Disable the drivers for the Chinese bank smart cards.
5. Ensure that all Windows Plug and Play services are set to automatically start at boot.
6. Boot Windows in safe mode with command prompt and in diagnostic mode. When booting in this fashion, boot gets stuck after indicating that MUP.SYS is being loaded.
I've read that MUP.SYS is rarely the problem when something like this occurs: it's merely the last driver to load, and after that Windows starts doing some things that it doesn't report.
At this point, I've exhausted everything I can think of. Any help on this problem would be highly appreciated!