Create a folder such as c:\logfiles\ on the server. Open Windows Explorer and select c:\local drive and create folder called \logfiles\

Open a command prompt command line window and change the working directory to C:\logfiles\ by typing

cd\logfiles\

and (enter)

Type:

dcdiag.exe /f:c:\logfiles\dcdiaglog1.log

This will run the DcDiag Tool and save the logfile to the log filename specified.