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What could cause this? Will this be a MB problem?

I have built a Intel system for a customer and have had problem of one kind to another . The MB is a DP43TF has a core 2 DUO Processor 4GB Mem and Windows 7 Pro 64 bit OS. Ran it for three days the Video Card went out, replaced it Did a complete reinstall of OS then ran it for two days with no problems. I shut it down for Approx. 6 Hrs and then turned the unit back on. I got 3 Beeps and the system would not start  I used the reset switch again the same thing. So I used the power switch to shutdown and restart. The system start perfect  and will run with no problems for 24 hrs or so If I do a restart it performs just fine. If I shut the unit off for several hours  the restart I start all over again with the three beeps. What could cause this? Will this be a MB problem?

Most likely is a Hardware issue.

Refer to the Motherboard manual, and look for the three beeps on the beep/error codes section, to find the probable cause.

PS: From that model's Manual:

Table 15. Beep Codes

Beep Description

3       No memory

Siren  Processor overheat (on reboot)


Check the RAM modules.

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I knew that 3 beeb was memory error. But why will the unit work when I use the power button to shut down and then restart? and run  and wake up after sleep mode and run till I shut it off for several hours, then I do  start up and get the 3 beeps again, its like a loop. The Ram works fine in other units.

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Failing Component

Beep Definition

Meaning

Beep Pattern Example

Memory

One short beep and one long beep followed by long pause.

Bad memory or memory configuration error.

Repeat:
(short) beep -> (short) pause ->
( long ) beep -> ( long ) pause

Graphics Card

Two short beeps and one long beep followed by long pause.

No graphics card installed or graphics card initialization failed.

Repeat 5 times,
then continue POST :
(short) beep -> (short) pause ->
(short) beep -> (short) pause ->
( long ) beep -> ( long ) pause

CPU

Three short beeps and one long beep followed by long pause.

CPU configuration error or invalid CPU detected before graphics card initialized.

Repeat:
(short) beep -> (short) pause ->
(short) beep -> (short) pause ->
(short) beep -> (short) pause ->
( long ) beep -> ( long ) pause

BIOS Recovery

One short beep followed by short pause.

No legacy floppy drive or optical drive found.

Repeat:
(short) beep -> ( long ) pause

Two short beeps followed by long pause.

No floppy diskette or CD found.

Repeat:
(short) beep -> (short) pause ->
(short) beep -> ( long ) pause

Three short beeps followed by long pause.

Flashing not ready (missing utility or BIOS image file, etc.)

Repeat:
(short) beep -> (short) pause ->
(short) beep -> (short) pause ->
(short) beep -> ( long ) pause

Four short beeps followed by long pause.

Flashing operation has failed (checksum error, corrupted image, etc.)

Repeat:
(short) beep -> (short) pause ->
(short) beep -> (short) pause ->
(short) beep -> (short) pause ->
(short) beep -> ( long ) pause

Five short beeps followed by long pause.

BIOS Recovery was successful.

Repeat:
(short) beep -> (short) pause ->
(short) beep -> (short) pause ->
(short) beep -> (short) pause ->
(short) beep -> (short) pause ->
(short) beep -> ( long ) pause

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Have you upgraded your MoBo to the latest BIOS ?

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Last updated September 16, 2022 Views 695 Applies to: