Dell Dimension 3100/E310 - Manual (Page 8)

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. 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 the computer
encountered a memory problem.
If your computer beeps during start-up:
1. Write down the beep codes.
2. Run the Dell Diagnostics to identify a more serious cause.
3. Contact Dell for technical assistance.
floppy drive or hard drive); check system setup (see " System Setup ") to
make sure the boot sequence is correct for the devices installed on your
computer.
l If the problem persists, contact Dell for technical assistance.
During normal operation, all of the diagnostic lights turn
on and then turn off before the system starts.
If all four diagnostic lights stay on and the power button
remains amber, a possible processor power or
connection error has occurred.
NOTE: If all of the diagnostic lights turn on then off and
the system does not start, there may be a problem with
the power supply or with the processor. For other
possible solutions, see "Power Problems" in your
Owner's Manual.
If the system does not start, plug the computer into a working electrical outlet.
Also see "Power Problems" in your Owner's Manual.
Unplug the power supply and check the 4-pin processor power cable
connection (see "
System Board Components ").
Reseat the processor (see " Processor ").
If there are no power problems and the system does not start, contact Dell for
technical assistance.
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
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
3-1-4 Slave interrupt mask register failure
3-2-2 Interrupt vector loading failure
3-2-4 Keyboard Controller Test failure
3-3-1 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
4-2-3 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
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