Dell OptiPlex 745c Quick Reference Manual

Also see for OptiPlex 745c: Administrator's guide User guide Quick reference guide

Quick Reference Guide 27Beep CodesYour 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. One possible beep code (code 1 3-1)consists of one beep, a burst of three beeps, and then one beep. This beep code tells you that thecomputer encountered a memory problem.If your computer beeps during start-up:1 Write down the beep code.2 See "Dell Diagnostics" on page 21 to identify a more serious cause.3 Contact Dell for technical assistance. For information on contacting Dell, see your online User’s Guide.Memory modules are detected, but a memoryconfiguration or compatibility error exists.• Ensure that no special memorymodule/memory connector placementrequirements exist.• Verify that the memory modules thatyou are installing are compatible withyour computer.• If the problem persists, contact Dell. Forinformation on contacting Dell, see youronline User’s Guide.A failure has occurred.This pattern also displays when you enter systemsetup and may not indicate a problem.• Ensure that the cables are properlyconnected to the system board from thehard drive, CD drive, and DVD drive.• Check the computer message thatappears on your monitor screen.• If the problem persists, contact Dell. Forinformation on contacting Dell, see youronline User’s Guide.Code Cause Code Cause1-1-2 Microprocessor register failure 3-1-4 Slave interrupt mask register failure1-1-3 NVRAM read/write failure 3-2-2 Interrupt vector loading failure1-1-4 ROM BIOS checksum failure 3-2-4 Keyboard Controller test failure1-2-1 Programmable interval timer failure 3-3-1 NVRAM power loss1-2-2 DMA initialization failure 3-3-2 Invalid NVRAM configuration1-2-3 DMA page register read/write failure 3-3-4 Video Memory test failure1-3 Video Memory test failure 3-4-1 Screen initialization failureLight Pattern Problem Description Suggested Resolutionbook.book Page 27 Wednesday, March 14, 2007 11:21 AM