谁能说说这段USB驱动错在哪里？

我用cy63001做了一个USB接口设备，USB设备插在联想开天系列的Pc上开机或重启时在win2k系统下（COMS设置中USB2.0支持打开时），报USB设备连接失败，拔下USB重插入连接成功。将CMOS中USB2.0支持关闭后连接USB设备重启PC可以连接成功。在别的计算机上没有这样的问题，下边是用debugprint看到的驱动连接失败的调试指令，请大家指点命令错在哪里？
Monitor 09:06:25, 02 Dec 2004 Version 1.03 starting to listen under Windows 2000 (5.0 build 2195) Service Pack 4
DebugPrint 09:05:30 Version 1.03 started
xxusb_reader driver checked 09:05:31 DebugPrint logging started
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 entering xxusb Driver 1.0
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 entering (xxusb) DriverEntry (Build: Dec  1 2004/17:08:07
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 exiting (xxusb) DriverEntry (00000000)
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 enter xxusb_PnPAddDevice
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 enter xxusb_CreateDeviceObject instance = 0
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 Create Device name (\Device\xxusbreader-0)
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 Create Device Name (\Device\xxusbreader-0)
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 Create DosDevice name (\DosDevices\xxUsbReader-0)
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 exit xxusb_CreateDeviceObject (00000000)
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 exit xxusb_PnPAddDevice (00000000)
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 Enter xxusb_DispatchPnp
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 Passing down unhandled PnP IOCTL 0x00000018
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 Exit xxusb_DispatchPnp C00000BB
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 Enter xxusb_DispatchPnp
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 Passing down unhandled PnP IOCTL 0x00000007
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 Exit xxusb_DispatchPnp C00000BB
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 Enter xxusb_DispatchPnp
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 IRP_MN_REMOVE_DEVICE
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 enter xxusb_RemoveDevice
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 exit xxusb_RemoveDevice (00000000)
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 Exit xxusb_DispatchPnp 00000000
xxusb_reader driver checked 09:05:31 xxusb.SYS:
xxusb_reader driver checked 09:05:31 exit xxusb_Unload
xxusb_reader driver checked 09:05:31 DebugPrint logging ended

社备描述符：
device_desc_table:  
    db  12h      
    db  01h      
    db  00h,01h
    db  FFh      
    db  00h      
    db  FFh    
    db  08h      
    db  48h,81h
    db  88h, 88h    
    db  00h, 00h      
    db  01h        
    db  02h    
    db  00h      
    db  01h
配置描述符：
 db  09h    
    db  02h      
    db  12h, 00h      
    db  01h      
    db  01h      
    db  04h    
    db  80h      
    db  32h  
接口描述符：
    db  09h      
    db  04h      
    db  00h      
    db  00h      
    db  00h      
    db  FFh      
    db  00h    
    db  FFh    
    db  05h
端点描述符无。

我也遇到过类似的问题，最终也没找到原因。
但先接上一个USB HUB（如1扩四。。。。），再接USB设备就没问题啦

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