Rohs Motherboard Long Continuous Beep Black Screen

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BIOS Beep Codes for Intel® Desktop Boards

Documentation

Content Type Troubleshooting

Article ID 000005473

Last Reviewed 09/14/2021

If an error occurs during startup, you will:

• Hear an audible beep code, or
• See a blink pattern on the power LED

Click or topics for details:

Audible beep codes

You can hear the beep codes through the onboard piezoelectric speaker. For Intel® Desktop Boards without the onboard speaker, you can hear the beeps through a speaker attached to the line out audio jack on the board.

Beep Code	Sequence/Pattern	Meaning	Troubleshooting Steps
Single beep	One 0.5 second beep	F2 Setup / F10 Boot Menu prompt	This short beep occurs when the BIOS is ready to accept keyboard input. No action needed.
2 beeps	On-off (1.0 second each) two times, then 2.5-second pause (off). The pattern repeats once. Then the computer continues to boot.	Video error (no add-in graphics card installed)	Reseat add-in graphics card. Make sure a compatible processor is installed. Related topics No video and two beeps during boot Intel® Processors and Boards Compatibility Tool
3 beeps	On-off (1.0 second each) three times, then 2.5-second pause (off). The pattern repeats until the computer is powered off.	Memory error	Reseat the memory. Make sure that the contacts on the memory and the socket are clean. Try removing one bank of memory modules at a time. (Some systems can require a memory module in Bank 0.) Try using memory modules from the same manufacturer with the same part number and speed. Check for a faulty memory module by trying the memory in a known good system.
High/low beeps	Alternate high and low beeps (1.0 second each) for 8 beeps. Then the computer shuts down.	CPU thermal trip warning	Check that the processor heatsink/fan is properly installed. Check that the thermal interface material is sufficient and is spread evenly.

Visible LED blink patterns

Visible blink patterns display via the front panel power LED.

LED Blink Pattern	Sequence/Pattern	Meaning	Troubleshooting Steps
2 blinks	On-off (1.0 second each) two times, then 2.5-second pause (off). The pattern repeats once. Then the computer continues to boot.	Video error (no add-in graphics card installed)	Reseat add-in graphics card. Make sure a compatible processor is installed. For more troubleshooting steps, see: No video and two beeps during boot Intel® Processors and Boards Compatibility Tool
3 blinks	On-off (1.0 second each) three times, then 2.5-second pause (off). The pattern repeats until the computer is powered off.	Memory error	Reseat the memory. Make sure that the contacts on the memory and the socket are clean. Try removing one bank of memory modules at a time. (Some systems can require a memory module in Bank 0.) Try using memory modules from the same manufacturer with the same part number and speed. Check for a faulty memory module by trying the memory in a known good system.
16 on/off blinks	.25 seconds on, .25 seconds off, for a total of 16 blinks. Then the computer shuts down.	CPU thermal trip warning	Check that the processor heat sink/fan is properly installed. Check that the thermal interface material is sufficient and is spread evenly.
Continual blinks	Off when the update starts, then on for 0.5 seconds, then off for 0.5 seconds. The pattern repeats until the BIOS update is complete.	BIOS update in progress	This blink pattern is normal behavior. No action needed.

Beep codes for discontinued (legacy) desktop boards

Beep State	Meaning
1 long beep followed by 2 short beeps	Video configuration failure (a faulty video card or no card installed), or an external ROM module does not properly checksum to zero.
1	Refresh failure
2	Parity can't be reset
3	First 64K memory failure
4	Timer not operational
5	Processor failure (reserved; not used)
6	8042 GateA20 can't be toggled (memory failure or not present)
7	Exception interrupt error
8	Display memory R/W error
9	(Reserved; not used)
10	CMOS Shutdown register test error
11	Invalid BIOS (such as, POST module not found)

Related Products

This article applies to 228 products.

Discontinued Products

Intel® Desktop Board CA810E

Intel® Desktop Board D815EFV

Intel® Desktop Board D845PECE

Intel® Desktop Board D945GZCC2

Intel® Desktop Board DQ33HS

Intel® Desktop Board DQ963GS

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Source: https://www.intel.com/content/www/us/en/support/articles/000005473/boards-and-kits.html

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