Member Avatar for zanzar

I just got my whole system built and at startup i get 3 beeps (ram problems) This is my first socket 775 build with ALL new equipment

No display on monitor
3 Short beeps
Swaped the 2 Dimm's in each channel

Specs..
•Intel D955XBK motherboard (ami bios)
•Intel Pentium D processor 2.8 GHz
•PNY 1Gig (512x2) 533Mhz DDR2 ram
•Maxtor 100 GB Harddrive (SATA)
•Gigabyte GeForce 6600GT Sli Card
•500 Watt ATX12V 2.0 power supply (with 24 pin atx power connector

  • 5 Contributors
  • 6 Replies
  • 339 Views
  • 4 Years Discussion Span
  • Latest Post Latest Post by diego_6668

Dani AI

Generated

Three short beeps on an AMI-based Intel board normally point to an early memory (base/first 64 KB) initialization failure, so the focus should stay on DIMMs and the memory channels rather than the monitor. was correct to call out RAM as the likely culprit; the Intel D955XBK product guide also documents the board’s recommended memory placement and power‑connection requirements. (Intel D955XBK Product Guide) (AMI beep codes overview).

Try these targeted troubleshooting steps (start at #1 and stop when the board POSTS or the beep pattern changes):

  1. Confirm a working system speaker is connected so you can hear beep codes (manual shows speaker/header location).
  2. Boot minimal: board + CPU + heatsink/fan (plugs to CPU_FAN) + PSU 24‑pin AND the 4‑pin 12V CPU connector (the D955XBK requires the 12V connector). Install a single known‑good DDR2 DIMM in Channel A DIMM0 (the manual shows which slot to use). Test each DIMM one at a time in that slot. (Intel D955XBK Product Guide)
  3. If a single good stick in DIMM0 still gives 3 beeps, try that same stick in the other slots to isolate a bad slot vs bad DIMM. Swap in a different, known‑good module if available.
  4. If beeps persist after testing known‑good RAM, verify the PSU (swap one in if possible) and double‑check the CPU 12V feed and socket for bent contacts—lack of the 12V feed can produce odd/no POST behavior.
  5. For the report by @diego_6668 (no beeps, fans spin, CPU not warming): that usually means the CPU/CPU power or speaker detection is the issue. Re-seat the CPU/heatsink, ensure the 4‑pin 12V is connected, and ensure the CPU fan cable is on the correct header. If the CPU still shows no thermal rise, try a different PSU or board — it can indicate the CPU is not being powered.

If all module/slot/PSU checks fail, the board’s memory controller or trace/slot hardware is likely defective and replacement or RMA is the practical next step.

Recommended Answers

All 6 Replies

Member Avatar for chrisbliss18

Have you tried stripping the setup down to nothing more than the mobo, processor, one stick of RAM, and the video card?

Member Avatar for zanzar

Yes i tried that config and it still doesnt work
when i turn it on it does the beep code it will shutdown
im thinking that i have to replace the mobo

Member Avatar for goldeagle2005

Try replacing the RAM sticks first. Since the mobo is beeping, I'd try swapping the RAM modules with known working modules.

Member Avatar for WTF

Maybe you plug in your monitor in wrong socket or BIOS set wrong. Because you have extra graphic card.

Member Avatar for goldeagle2005

Maybe you plug in your monitor in wrong socket or BIOS set wrong. Because you have extra graphic card.

I doubt that's the issue. 3 beeps signifies a problem with the memory subsystem.

Member Avatar for diego_6668

i also had a promlem with this board d955xbk i installed a known working processor and ram video card the standby led lights when i power it up all fans spins but nothing on the screen appear..no beep nothing except fan spinning and i notice processor does not heatup..but fan spins..please help

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