问号怎么修改

驱动安装后设备管理器中会出现问号是什么意思
怎么修改？？

跟设备描述符中的类，和子类、协议填写有什么关系吗？

我的INF是由DW生成的
;; T24.inf

;; *********  PLEASE READ ***********
;; The wizard cannot create exact INF files for all buses and device types.
;; You may have to make changes to this file in order to get your device to
;; install. In particular, hardware IDs and logical configurations require
;; intervention.
;;
;; The Windows DDK documentation contains an excellent INF reference.

;--------- Version Section ---------------------------------------------------

[Version]
Signature=\"$Windows 95$\"

; If device fits one of the standard classes, use the name and GUID here,
; otherwise create your own device class and GUID as this example shows.

Class=NewDeviceClass
ClassGUID={ff646f80-8def-11d2-9449-00105a075f6b}
Provider=%jin%


;--------- SourceDiskNames and SourceDiskFiles Section -----------------------

; These sections identify source disks and files for installation.  They are
; shown here as an example, but commented out.

;[SourceDisksNames]
;1 = \"Install Disk\",Disk1,,

;[SourceDisksFiles]
;T24.sys = 1,,

;--------- ClassInstall/ClassInstall32 Section -------------------------------

; Not necessary if using a standard class

; 9X Style
[ClassInstall]
Addreg=Class_AddReg

; NT Style
[ClassInstall32]
Addreg=Class_AddReg

[Class_AddReg]
HKR,,,,%DeviceClassName%
HKR,,Icon,,\"-18\"

;--------- DestinationDirs Section -------------------------------------------

[DestinationDirs]
T24_Files_Driver = 10,System32\\Drivers

;--------- Manufacturer and Models Sections ----------------------------------

[Manufacturer]
%MfgName%=Mfg0

[Mfg0]
%DeviceDesc%=T24_DDI, USB\\VID_0481&PID_0025

;---------- DDInstall Sections -----------------------------------------------
; --------- Windows 9X -----------------

; Experimentation has shown that DDInstall root names greater than 19 characters
; cause problems in Windows 98

[T24_DDI]
CopyFiles=T24_Files_Driver
AddReg=T24_9X_AddReg

[T24_9X_AddReg]
HKR,,DevLoader,,*ntkern
HKR,,NTMPDriver,,T24.sys
; --------- Windows NT -----------------

[T24_DDI.NT]
CopyFiles=T24_Files_Driver

[T24_DDI.NT.Services]
Addservice = T24, 0x00000002, T24_AddService

[T24_AddService]
DisplayName    = %SvcDesc%
ServiceType    = 1                  ; SERVICE_KERNEL_DRIVER
StartType      = 3                  ; SERVICE_DEMAND_START
ErrorControl   = 1                  ; SERVICE_ERROR_NORMAL
ServiceBinary  = %10%\\System32\\Drivers\\T24.sys



; --------- Files (common) -------------

[T24_Files_Driver]
T24.sys

;--------- Strings Section ---------------------------------------------------

[Strings]
ProviderName=\"Your Company Name here\"
MfgName=\"Name of HW Manufacturer here\"
DeviceDesc=\"Description of Device here\"
DeviceClassName=\"Description of T24 Device class here\"
SvcDesc=\"Description of T24 NT service here\"