XPS 15 9570 无法安装独显驱动

​显示“拒绝访问”。在设备管理器中查看也看不到英伟达的显卡，只有一个核显，请问该如何解决？ 更新：使用管理员身份运行报错变为“系统找不到指定路径” 更新：更新windows后报错变成“系统找不到指定的文件” 我是用的是Dell官网下载的显卡驱动 安装LOG为 ​

​਍਍[Mon Mar 25 15:34:13 2019] Update Package Execution Started [Mon Mar 25 15:34:13 2019] Original command line: "C:\Users\shini\Downloads\nVIDIA-Graphics-Driver_8FWXK_WIN_24.21.13.9793_A02.EXE" [Mon Mar 25 15:34:13 2019] DUP Framework EXE Version: 3.8.1.41 [Mon Mar 25 15:34:13 2019] DUP Release: 8FWXKA02 [Mon Mar 25 15:34:13 2019] Initializing framework... [Mon Mar 25 15:34:13 2019] Data in smbios table is (hex)value = a , Chasis type (hex)value = a , System type is : Client [Mon Mar 25 15:34:13 2019] logo.png [Mon Mar 25 15:34:15 2019] User Command: attended [Mon Mar 25 15:34:15 2019] DUP Capabilities Value: 41943039 (0x27FFFFF) [Mon Mar 25 15:34:15 2019] DUP Vendor Software Version: 24.21.13.9793 [Mon Mar 25 15:34:15 2019] Local System/Model Compatible with this Package? Yes [Mon Mar 25 15:34:15 2019] Local System OS Version: 10.0.0.0 [Mon Mar 25 15:34:15 2019] OS Compatible with this Package? Yes [Mon Mar 25 15:34:15 2019] Local System OS Language: ZH [Mon Mar 25 15:34:15 2019] Language Compatible with this Package? Unknown [Mon Mar 25 15:34:15 2019] Identified Behavior : attended [Mon Mar 25 15:34:15 2019] Extraction-miniunz path: c:\PROGRA~3\dell\drivers\2591d555-d1a4-4683-9ed7-7f4c484abe64\miniunz.exe [Mon Mar 25 15:34:15 2019] Extraction-arguments: -x C:\Users\shini\DOWNLO~1\nVIDIA-Graphics-Driver_8FWXK_WIN_24.21.13.9793_A02.EXE -o -d c:\PROGRA~3\dell\drivers\2591d555-d1a4-4683-9ed7-7f4c484abe64 [Mon Mar 25 15:34:21 2019] Extraction-GetExitCode: 0 [Mon Mar 25 15:34:21 2019] Identified Behavior : attended [Mon Mar 25 15:34:21 2019] Temporary payload log file name: C:\ProgramData\dell\drivers\2591d555-d1a4-4683-9ed7-7f4c484abe64\DUPLogDir\DUPDC7C.tmp [Mon Mar 25 15:34:21 2019] Translated Command Line : NVMUP.exe /v "LOGFILE=\"C:\ProgramData\dell\drivers\2591d555-d1a4-4683-9ed7-7f4c484abe64\DUPLogDir\DUPDC7C.tmp\"" [Mon Mar 25 15:34:21 2019] Path : C:\ProgramData\dell\drivers\2591d555-d1a4-4683-9ed7-7f4c484abe64 [Mon Mar 25 15:34:21 2019] Identified Behavior : attended [Mon Mar 25 15:34:23 2019] Append Vendor Software Log: C:\ProgramData\dell\drivers\2591d555-d1a4-4683-9ed7-7f4c484abe64\DUPLogDir [Mon Mar 25 15:34:23 2019] --- Start of Vendor Software Log --- [Mon Mar 25 15:34:23 2019] --- End of Vendor Software Log --- [Mon Mar 25 15:34:23 2019] Vendor Software Return Code: 4294967295 [Mon Mar 25 15:34:23 2019] (FileUtility::DeleteDirectoryTree): *** DeleteFile() has reported failure. The error message reported by the system is: 拒绝访 [Mon Mar 25 15:34:23 2019] (FileUtility::DeleteDirectoryTree): *** DeleteDirectoryTree() has reported failure. The error message reported by the system is: 拒绝访 [Mon Mar 25 15:34:23 2019] logo.png [Mon Mar 25 15:34:23 2019] (MUPXMLParser::GetResultName): *** Vendor Return Code is not found in Mup.xml [Mon Mar 25 15:34:23 2019] Name of Exit Code: [Mon Mar 25 15:34:23 2019] (DupAPI::GetReturnCode): *** Unable to find DUP value for: [Mon Mar 25 15:34:23 2019] Exit Code set to: 1 (0x1) [Mon Mar 25 15:34:23 2019] Result: FAILURE [Mon Mar 25 15:34:24 2019] Open file: C:\ProgramData\Dell\UpdatePackage\Log\nVIDIA-Graphics-Driver_8FWXK_WIN_24.21.13.9793_A02.txt​