Epson Equity 486DX2/50 PLUS User Manual - Page 157

2. At the MS-DOS command prompt, type VER and press IEnter The screen displays the MS-DOS version number. Write down the number so you can give it to your dealer. If you did not copy ROMBIOS.COM or you do not have a hard disk, follow these steps: 1. Insert the Reference diskette in drive A and turn on or reset your computer. 2. At the Operation Menu, select Exit to MS-DOS for more utilities and press IEnter 3. At the A> prompt, type ROMBIOS and press IEnter Write down the version number displayed on your screen. 4. Remove the Reference diskette and, if necessary, insert your Startup diskette in drive A. Type VER and press IEnter The screen displays the MS-DOS version number. Write down the number so you can give it to your dealer. Error Messages Your computer's built-in memory (ROM) contains a series of diagnostics programs, called power-on diagnostics, which your computer runs automatically every time you turn it on. These programs check internal devices such as ROM, RAM, the timer, the keyboard controller, and the hard disk drive. The RAM test program displays the total amount of memory currently installed in your system. If the computer finds an error, it displays an error message on the screen. If the error is not serious, you see this prompt: (Resume = "F1" key) Write down the error message, and press 1 to continue. B-2 Troubleshooting