# Starting the diagnostics program

To run the diagnostics program ensure that your Ringnode is configured and installed in your computer according to the instructions in the Ringnode installation guide.

Then perform the following steps:

1. If you are running any application programs, exit from them and return to the DOS prompt.

2. Insert your copy of the disk containing the diagnostics program into the A: drive.

3. To run the program, type:
   `A:DIAG <command-line parameters> [ENTER]`