the phenomenon that the bandwidth of usb controller is exceeded is generally because the driver is not digitally signed, that is. The driver failed the windows Hardware Quality Laboratory (WHQL) test of Microsoft. Hardware products that do not display the logo "Designed for Microsoft Windows XP" on the outer packaging and the device itself. Such products are not guaranteed to be compatible with Microsoft Windows operating system.
installing device drivers without Microsoft digital signature may make the system unusable, allow viruses to enter the computer, or damage the correct operation of the computer immediately or after a period of time.
the controller does not have enough bandwidth for the camera, and it is verified that it requires 12% bus bandwidth. And its default bandwidth is 1%, so a USB device should be disabled to ensure the use of the camera.
so how to solve this problem? In fact, it is very simple, that is, find a driver of another camera, preferably verified and signed by Microsoft. After installation, the camera may be used normally.
This is because, although the original ones were made by ourselves, the manufacturers can't produce the corresponding drivers correctly because the technology of making software is not up to standard, so sometimes the drivers of other manufacturers are more adaptable.
According to my experience, we should pay attention to the following points when choosing drivers that are not included in the hardware:
1. When installing drivers, we should choose reliable drivers. One is that there is no virus after antivirus software, and the other is to try to choose a driver that is higher than the original high-grade similar products, preferably verified and signed by Microsoft. Third, the driver file is not damaged, such as scratches on the CD, bad burning of the driver software, etc.
2. When installing the driver, follow the steps of adding hardware, such as: right-click on my computer-Properties-Hardware-Add Hardware Wizard-Next-Yes, the hardware is connected-Next-click on the hardware to install the driver. . . . . . Let the computer automatically search for the hardware driver. If it can't be found, you can't choose and install it from the CD. Otherwise, the hardware is incompatible with the driver, and the ideal effect cannot be achieved, or even it cannot be used.
3. It is not always successful to install drivers brought by other hardware, so there must be multiple hardware drivers to choose from to ensure its success.
4. After the installation can be used, you should pay attention to using less tools and software, such as Super Rabbit, to clean up the registry and delete the junk files on the hard disk, which will easily cause file damage. Make it lose the best use effect.
It is suggested that this friend can carefully disassemble the camera, see what model the main control chip is, and then go online to find the appropriate driver.