Search items did not show infcache. But anyhow found in the driver folder in system 32 and accordingly moved to desktop. again restarted the computer , went to device manager and then clicked view, show hidden devices, and found some devices as faded. Just selected each one of them and uninstalled and rebooted the system. Now went to the driver folder in system 32, but no infcache.1 recreated. Thought of copying the moved file from desktop. But tried to insert the canon scan usb. First it popped to show installing drivers for device, first from preconfigured driver folder (probably denoting the driver folder) and after searched for drivers from windows updates, failing, again went to preconifugred folder and then installed the device driver. Now, i could see the freshly created infcache.1 in that folder, but the file size is less. This may be probable because of removal of all the usb devices and moving the file infcache.1
Now i checked the device manager, and found that all the Faded devices are no more present.
Boggin, 1. Why there is faded device shown , more than 10 in numbers in different category of usb controllers. Thanks to your link .
2. How this could be reason for strange behaviour of mouse vanishing while browsing.
Mouse is vanishing particularly when scan is demanded and when something is downloading. Why. Some times, the mouse pointer is there in the screen, but i could not move , as the mouse becomes dead.