2.At the command prompt, enter the appropriate command to display the version number of your operating system.

Write it down, and then obtain the version numbers of any application programs you are using.

Error Messages

Your computer’s built-in memory (ROM) contains a series of diagnostic programs, called power-on diagnostics. These programs check various internal devices every time you turn on the computer. The RAM test displays a count of the memory currently installed in your system.

If the computer finds an error, it may display an error message on the screen or sound an error tone code that identifies the error, such as one beep-two beeps-one beep. If the error is serious, the computer cancels further checking. The computer locks up, and if there is an error message, it remains on the screen. Write down the error message or the tone code pattern and give it to your dealer when reporting a problem.

The tables below list the error messages and tone codes.

Power-ondiagnostic error messages

C-2 Troubleshooting