Resolving Software And Hardware Incompatibilities - Dell OptiPlex 745 dctr Schnellreferenzhandbuch

If your computer beeps during start-up:
1 Write down the beep code.
2 See "Dell Diagnostics" on page 46 to identify a more serious cause.
3 Contact Dell for technical assistance. For information on contacting Dell, see your online User's
Guide.
Code Cause
1-1-2 Microprocessor register failure
1-1-3 NVRAM read/write failure
1-1-4 ROM BIOS checksum failure
1-2-1 Programmable interval timer failure 3-3-1
1-2-2 DMA initialization failure
1-2-3 DMA page register read/write
failure
1-3 Video Memory test failure
1-3-1 through 2-4-4 Memory not being properly
identified or used
3-1-1 Slave DMA register failure
3-1-2 Master DMA register failure
3-1-3 Master interrupt mask register
failure
4-2-3 Gate A20 failure
4-2-4 Unexpected interrupt in protected
mode
4-3-1 Memory failure above address
0FFFFh
4-3-3 Timer-chip counter 2 failure
4-3-4 Time-of-day clock stopped

Resolving Software and Hardware Incompatibilities

If a device is either not detected during the operating system setup or is detected but incorrectly
configured, you can use the Hardware Troubleshooter to resolve the incompatibility.
1 Click the Start button and click Help and Support.
2 Type hardware troubleshooter in the Search field and click the arrow to start the search.
Code Cause
3-1-4 Slave interrupt mask register failure
3-2-2 Interrupt vector loading failure
3-2-4 Keyboard Controller test failure
NVRAM power loss
3-3-2 Invalid NVRAM configuration
3-3-4 Video Memory test failure
3-4-1 Screen initialization failure
3-4-2 Screen retrace failure
3-4-3 Search for video ROM failure
4-2-1 No timer tick
4-2-2 Shutdown failure
4-4-1 Serial or parallel port test failure
4-4-2 Failure to decompress code to
shadowed memory
4-4-3 Math-coprocessor test failure
4-4-4 Cache test failure
Quick Reference Guide
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