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[BIOS] [Patches]
[IRQs] [Overclocking] [Patch for WinXP] [USB
2.0]
Hot Fix for problems with SiS USB
Host Controllers and Windows XP w/ Service Pack 2 has been fixed.
A USB device that is connected
to a USB 2.0 hub is not detected in Windows XP Service Pack 2, Windows
Server 2003 Service Pack 1, or Windows Server 2003 x64 versions
More Information
Getting Started
- The SiS PCI/USB Host
Controller can be difficult to configure and seemingly unrelated BIOS settings
can adversely effect its operation.
This is especially true of the 7001. Most older SiS motherboards
suffer from USB issues.
- Try the following {Work Arounds} in
the order presented.
- Read through the
entire Guide before you start.
- Print
the page for reference.
- Uninstall software using the program's
Uninstaller or the Control Panel,
Add/Remove Programs function, remove all USB Devices except USB keyboard and/or
mouse before trying any of the following suggestions.
- The SiS 7001 has Known Issues with Windows
XP
that the New Registry Patch does not correct. Consider installing a
PCI USB Card as a work around
for the onboard USB host controller.
BIOS
Update to the latest BIOS version available for
your motherboard
As a General Rule the following BIOS statements should be true:
(Please Note)
Owners of Socket 7-based systems, report that
setting "Legacy USB devices" to "DISABLED" has cured unruly USB
functionality.
Overclocking
Cleanup the
Device Manager while in Safe Mode
-
Ghost Devices, (Hardware
listed in Windows Virtual (Safe)
Mode, that does not appear in the Device manager while in Standard Mode),
can
cause untold USB problems. Therefore, one of the very first steps to
take in the
troubleshooting process is to.....
Cleanup
the Device Manager while in Safe Mode
Disable USB Error
Detection for Win98SE
or Newer OS
-
In Windows
Standard Mode, Device Manager, USB Host Controllers, SiS USB Host Controller, Advanced, Enable the function (Disable USB Error
Detection)
Back to Top
Update the Driver
- In
Device Manager, Windows Standard Mode update the SiS driver.
Choose from list and select and install Standard Open HCL USB Host
Controller.
IRQ Issues
-
Check to make sure that USB is
NOT sharing its IRQ with another device. USB can only share its IRQ with other USB Host controllers (such as a USB upgrade card, if applicable) and IRQ Holder
for PCI Steering. (The following graphic shows an Intel USB host
sharing an IRQ with the 4 host controllers of a Belkin
QuadraPort USB upgrade card). Help resolving IRQ issues can be
found in the USB Troubleshooter.
SiS USB Patch (Win95
Only)
The Microsoft Patch (Win98SE
Only)
Install the Microsoft VIA/AMD Patch if you have an SiS 7001
USB/OHCI and a 350MHZ or faster processor. Microsoft confirms
success using this patch with SiS 7001 USB Host controllers.
SiS USB Registry
Patch (Windows XP)
Fixes the undetectable problem with SiS USB controller on Windows XP.
Release patch file
for the USB devices sometimes undetectable issue on Windows® XP with SiS USB
controllers
-
SiS USB Registry
Patch -
Usbdetect.exe
- 54KB -
12/17/2001
-
Note
After you apply the patch, you may need to
refresh the USB driver stack
The USB 2.0
driver for Windows XP
and Windows 2000
-
USB 2.0 Drivers for Win 98Se and Me
are found on the SiS Motherboard Installation CD
-
The latest Microsoft USB 2.0 Drivers
can be downloaded from the
Windows Update Web Site
-
Note:
The USB2.0 driver for Windows XP and
Windows 2000 is released by Microsoft and supported by SiS. For Windows 98 and
Windows Me systems, the USB2.0 driver is co-worked and supported by the third
party, such as OrangeWare.
BIOS USB DOS Function -
Disabled
Unplug the Computer of 15 Minutes and try again
Last Resort / Often the Best Option
If you are still unable to
initialize USB and if the USB IRQ is free, IRQ Steering is enabled and the BIOS
has Enabled USB support, a PCI/USB upgrade card is the solution.
USBMan tested and approved USB
Upgrade Cards
listed by
chipset type and manufacturer can be found in USB
Problem Solver
The SiS Tech Support Web
Site
Back to Top
USBMan
12/08/2006
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