At present, the USB device has emerged as the spring bamboo shoots, but on the one hand, since people understand the characteristics of USB, the USB and supporting technology are not fully mature, resulting in many users in the process of using the USB device. Various problems, such as: Unable to install USB devices, USB 2.0 devices are slower, and other communications issues that cannot be solved by normal troubleshooting processes.
First, solve the first Washan first in the USB fault
If your USB device is faulty in installation or use, first check if the system correctly recognizes the USB chipset. The steps are as follows:
In Windows 2000 / XP (Windows 9X / ME operation steps are basically similar), click "Start → Settings → Control Panel → System → Hardware → Device Manager", found and double-click "General Serial Bus Controller". There should be at least two types of entries, and one is a USB controller and the other is USB Root HUB (see Figure 1). If your motherboard supports USB 2.0, the driver is installed normally, USB 2.0 root hub is usually displayed here.
figure 1
hint
A USB root hub entry is displayed, and 2 USB ports can be used. For example, the above figure shows 4 USB root hub entries, and you can use 8 USB ports (usually available by the BIOS settings). USB 2.0 root hub is to indicate that these 8 USB ports support USB 2.0.
If Windows cannot recognize the USB controller, or "USB controller" appears in "Other Devices", the driver of the motherboard chipset or USB 2.0 is not installed successfully. It is recommended that everyone can download the latest drivers to the official website of the chipset and confirm that Windows can identify correctly.
Second, USB controller failure solution
The following solutions are proposed for different USB controllers:
1.intel chipset
Possible faults: Adopt Intel 82371AB, EB, EB, MB, SB, and AB / EB series Nanqiao chip, Windows may not recognize devices connected to the system, or when the system appears, hang, sleep state, device And computers may stop communications, etc., using Intel 82801AA, BA, and BAM Nanqiao chips, may have intermittent communication or connection issues.
Solve: Intel improved the 82371Ab / EB bridge chip, if your motherboard uses this South Bridge chip, there will be no problem. If Intel 82371Ab, EB, EB, EB, EB series South Bridge chip is recommended, it is recommended to change the driver to more Intel 82371Ab / EB driver; use Intel 82801AA, BA and BAM Nanqiao chip, it is recommended to change the driver to Intel 82801AB driver . The procedure is as follows (with Windows XP as an example, Windows 9x / ME / 2000 is similar):
Click "Start → Settings → Control Panel → System → Hardware → Device Manager → Universal Serial Bus Controller", double-click the "*** universal host controller" entry.
The "*** universal host controller" window appears, click the "Driver" tab, click the "Update Driver" button.
Select "Install (Advanced) from a list or specified location (Advanced)" and click the "Next" button.
Select "Don't search. I want to choose the driver to install", click the "Next" button.
Cancel the check before "display compatibility hardware" and select "Intel" from the manufacturer list, select "82371Ab / EB". If you are not available, select "82371AB USB Host Controller" from the model information, click "Next" to continue.
According to the wizard, press the installation of the new driver according to the instructions, and click "Finish" after the new driver is loaded.
2.VIA chipset
Possible failure: If your motherboard uses VIA VT83C572 / VT82C586 or VIA VT6202 universal host controller, USB communication issues may happen, such as when connecting to some USB devices, the computer stops responding or hanging; a "STOP : 0x0000000A-IRQL_NOT_SSS_ OR_EQUAL "Error message; driver installation (plug-and-play) may not be able to do correctly. Windows 2000 does not support the USB controller of the VIA after REV_05. Microsoft has confirmed that Windows 2000 and VIA VT83C572 chipsets are not compatible, and the same error may occur on the Intel 82371Ab / EB chipset. Solve the way 1:
Download the latest version of the VIA Hyperion 4IN1 driver from the VIA website (download address: downloads.viaarena.com/drivers/4in1/via_hyverion 4in1_v451v.zip) and installation.
Download the latest version of the VIA USB filter patch from the VIA website (USB 1.1 download address: Downloads.Viaarena.com/drivers/oThers/usbf_110.zip; USB 2.0 Download Ues: http://downloads.viaarena.com/drivers /Usb/VIA_USB2_V258P3-LM.zip).
Solving 2: Microsoft has pointed out that there is a problem with the second edition of Windows 98 when the computer's AMD processor is faster than 350MHz or a VIA's USB controller. USB Controller Driver (UHCD.SYS) timing error, preventing USB devices from simulating under specific conditions. You can download UHCD.sys upgrade from the Microsoft Site. Complete the following steps to determine if you need to upgrade uhcd.sys:
Click "Start → Find → Search all files or folders", type "UHCD.SYS" in File Name, click "Search".
After completing the search, right click on the found file, then click "Properties", click the "Version" tab, and select the version number. If the version number is not 4.10.2223 or higher, the upgrade section is downloaded from the Microsoft website (download address: http://download/win98se/patch/4.10.2223/w98/en-us/240075Up. EXE).
Solving 3: A "Chip Performance Speed (or System Performance) is provided in some VIA chipset, which should be set to" Normal "instead of" strong "," turbo "," Optimal ". Or "fast".
3.Ali chipset
Possible failures: When disconnecting one of the USB devices, it will cause other USB devices to be discontinued. This issue is more prone to occur on a higher frequency AMD Athlon processor platform. After completing the following solution steps, the test device looks at whether it works, and then performs the next solution.
Solving 1: Check the BIOS settings, the relevant settings are referred to as follows (some items may not exist, depending on some settings of the BIOS version): The project is correctly set
Plug and Play Operating System Enable: Pentium / Pro processor
Disable: Pentium II / III / 4 processor
IrqAuto or OS
USB or USB keyboard is enabled
BIOS control power support is disabled
ACPI disabled
Solving 2: If you use the Windows 98 second edition, download and install the upgraded openhci.sys file from Microsoft URL (download address: Download.Microsoft.com/download/win98se/update/6101/w98/en-us / 253697usa8.exe).
Solving 3: It is recommended to change the USB Host Controller's driver to the Standard OHCI USB Host Controller driver. The operation steps are described in the "Intel Chipset", but only the model information in STEP5 is changed to "Standard Universal PCI to USB Host Controller (Microsoft)". 4.AMD chipset
Possible failure: When you use AMD's OHCI USB controller, Windows does not recognize intermittent operations of USB mouse or keyboard.
Solving 2: Please download and install the upgraded openhci.sys file from Microsoft URL (download address: http://download/win98se/US/241134 el98/EN-US/241134USA8.EXE) .
5.SIS chipset
Possible failure: similar to the previous "Intel Chipset".
Solving 1: Check the BIOS settings, the relevant settings are referred to as follows (some items may not exist, depending on some settings of the BIOS version): The project is correctly set
Plug and Play Operating System Enable: Pentium / Pro processor
Disable: Pentium II / III / 4 processor
IrqAuto or OS
USB or USB keyboard is enabled
BIOS controlled power management support is disabled
BIOS support for DMA
Write prefetch disabled
ACPI disabled
Enhance Chip Performance is enabled
Solving 2: If you use the Windows 98 second edition, download and install the upgraded openhci.sys file from Microsoft URL (download address: http://download/win98se/update/6101/W98 /En-us/253697usa8.exe).
Solving 3: Disabling USB error detection.
Click "Start → Settings → Control Panel → System → Hardware → Device Manager → Universal Serial Bus Controller", double-click the "*** universal host controller" entry.
The "*** universal host controller" window appears, click the Advanced "tab, check" Deactivate USB Error Detection "(see Figure 2), then click the" OK "button.
figure 2
Restart your computer and check if you have resolved.
Solving 4: It is recommended to change the USB Host Controller driver to the Standard OHCI USB Host Controller driver. The operation steps are described in the "Intel Chipset", but only the model information in STEP5 is changed to "Standard Universal PCI to USB Host Controller (Microsoft)".
If the communication between the computer and the device is repeated, unplug the USB cable from the computer and reconnect the cable. If this operation does not recover communication, restart your computer.
hint
If these methods still can't solve the problem, you can try to upgrade the motherboard BIOS to see if the problem can be solved. Or directly do tens of dollars to purchase an external power-on active USB hub (see Figure 3), connect the USB device through the active USB hub.
image 3
Third, don't ignore power problems
Some USB controllers may result in some problems associated with the power supply. The USB device contains power supplies from the computer to drive USB communication via a USB cable. The computer can detect the device at a low power level of 100 mA, but 500mA is required to maintain high-speed communication such as a high-power USB device such as a mobile hard disk.
Figure 4
Possible failure: Unable to detect plug-and-play USB devices; USB devices are frequently disconnected; only when other USB devices are disconnected, this USB device can work. Typically, if it is not caused by a USB controller or a cable, it may be caused by a power problem.
Solving 1: If you use a mobile hard disk, a high-powerful USB device, because each USB port can only provide 500mA current, so be sure to connect the mobile hard disk directly to the motherboard or PCI-USB interface card. Usb ports and use the manufacturer with the USB cable attached to the mobile hard disk. Because the USB cable of the manufacturer is usually thick, shorter, the current loss is less, using other USB cables or puts the mobile hard drive on the extended USB interface, it is possible to cause the hard disk to supply insufficient power. Solving 2: It is recommended not to connect to other USB devices through the USB hub built-in USB device, as this type of USB keyboard does not provide sufficient current to drive maximum power USB devices (such as mobile hard drive, printer, scanner, multi-function machine) . These keyboards have two integrated USB ports that only support current of about 100 mA. [Yj03]
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