"我的电脑"-右击点“管理”-“设备管理器”看里面有没有未知或打“!”的设备,有的话就是驱动没装好。没有的话就是你系统被禁用U盘了,到注册表里改一下!〔将下面的文字复制一下,保存为EnableUSB.reg〕
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR]
"Type"=dword:00000001
"Start"=dword:00000003
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,44,00,\
52,00,49,00,56,00,45,00,52,00,53,00,5c,00,55,00,53,00,42,00,53,00,54,00,4f,\
00,52,00,2e,00,53,00,59,00,53,00,00,00
"DisplayName"="USB 大容量存储设备"
即可!