Dell OptiPlex 755 Quick Reference Guide - Page 70

Power Light Problem Description Another failure has occurred. Suggested Resolution • Ensure that all hard drive and optical drive cables are properly connected to the system board (see "System Board Components" for your system). • If there is an error message on the screen identifying a problem with a device (such as the floppy drive or hard drive), check the device to make sure it is functioning properly. • If the operating system is attempting to boot from a device (such as the floppy drive or optical drive), check system setup (see "System Setup" in the User's Guide) to ensure the boot sequence is correct for the devices installed on your computer. • If the problem persists, contact Dell (see "Contacting Dell" in the User's Guide). Beep Codes Your computer might emit a series of beeps during start-up if the monitor cannot display errors or problems. This series of beeps, called a beep code, identifies a problem. For example, beep code 1-3-1 (one possible beep code) consists of one beep, a burst of three beeps, and then one beep. This beep code tells you that the computer encountered a memory problem. Reseating the memory modules may correct the following beep code errors. If the problem persists, contact Dell (see "Contacting Dell" in the User's Guide) for instructions on obtaining technical assistance. 70 Quick Reference Guide