手指的USB插口無法識別 ,MOUSE的USB插口郤能運作

你試下2隻手指一齊插入去啦,可能得ge

Good thing you've ruled out faults in the USB device using a second PC. Now try this:
Disconnect all USB devices and use the following steps to remove the USB Host
Controller in XP:

Restart the computer and press the F8 key
repeatedly after the first screen displays. A Startup screen pops up. Select Safe Mode and press Enter. Windows
starts with Safe Mode displayed in all four corners of the desktop. Right-click My Computer, and click Properties.
Go to hardware then Device manager. Click the (+) plus sign next to the Universal
Serial Bus. Select USB Root Hub, and then click Remove.
Continue until all USB Root Hubs are removed. Close Device Manager. Click Start, click Search, and then click
all Files and Folders. Set the Look in box to Local Hard (C: ;D:). In the Named box type "usb.inf",
then click Find Now. Right-click USB, then Install. Restart the computer and verify that the USB
Root HUB exists in Device Manager. If needed, install the device software driver using the
manufacturer's recommended method. Reconnect the USB device. Consult the manufacturer of the device for support if the device still
fails to display.
Last of all, since there is no mention of USB failure in BIOS, we'll leave it for the time being but sometimes it might be the possible culprit.


2010-06-10 16:19:11 補充：
Go to device manager, right click on Rot Hub then Properties then Power. Total power avaialable should be 500mA per root. If not, check your motherboard.

這可能是usb電力不足問題, 可能你電腦已插有某些高耗電的設備而引致, 賞試停用部份再試..或在熄機時插入手指再開機可能用到
高耗電裝置包括: usb tv tuner
usb wifi及無外接電原的外置hdd等