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no boot, no beeps

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October 31, 2013 10:21:49 AM

I need to figure out if replacing the motherboard is needed or if it more likely PSU or components. I can't afford to build a new system right now, and I need to get this up & running asap.

I've spec'd out a replacement LGA 775 mobo (ASRock G41C-GS LGA 775 Intel G41 Micro ATX, ~$60) but want to find out if that will likely do the trick, or if I'm also looking at new psu/ram/etc - in which case I'm out of luck for the foreseeable future.

System was running just fine, no recent changes to hardware or software other than Win7 updates several days before, case hadn't been opened for anything, no recent bios changes... No lightning storms, no power loss - just shut down as normal in the afternoon and failed to boot an hour later.

Symptoms:
1) Will not boot, and no post beeps at all. System and CPU fan spin up. No front LED lights, but dvd & hdd start to spin up then stop. A low clicking is audible (about 1/s). No video signal to the monitor.

2) After removing all but 1 stick ram, same symptoms. Cycled through ram sticks, all same result.

3) Leave 1 stick ram in, remove video card. Same result.

4) Remove vid card and all ram. Almost the same, but get one long beep (pause) 3 long beeps (pause) continuous long beeps.

5) put vid card back in, same as #4.

6) Cleared CMOS, replaced battery. Repeat steps #1-5 with same results.

System is:
Gigabyte GA-P35-DS3L mobo
Intel Core 2 Quad Q9400
4Gb DDR2 PC2 5300 (4x1gb)
EVGA GeForce 8600 GTS
Antek NSK4480B w/ Earthwatts 380W PSU

More about : boot beeps

October 31, 2013 10:38:21 AM

That clicking sound may be your hard drive going or gone bad.
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a c 110 V Motherboard
October 31, 2013 10:45:15 AM

first of all unless you're buying the motherboard unused no LGA 775 motherboard should cost you $60. i'm finalizing a deal for a ROG AM3 motherboard right now for $20. do some more price shopping my friend. no 3+ year old motherboard should ever go for more then $30 used, or $40 new.

your beeps mean

1 short: System boots successfully
2 short: CMOS setting error
1 long, 1 short: Memory or motherboard error
1 long, 2 short: Monitor or graphics card error
1 long, 3 short: Keyboard error
1 long, 9 short: BIOS ROM error
Continuous long beeps: Graphics card not inserted properly
Continuous short beeps: Power error

If you were getting video without the pci-e video card installed i'd say your issue is the card. Right now i'd try another psu (pull one out of another system) before buying the motherboard. Frankly a bad psu and a bad motherboard have such similar symptoms and usually damage each other when one goes i usually replace them as a pair. At least i tend to advise people to do so. And it's advice i always follow myself. If i ever have a mb die the psu gets replaced with it cause chances are the psu was damaged when the motherboard went or did the damage to the motherboard in the first place.

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October 31, 2013 10:59:05 AM

ingtar33 said:
first of all unless you're buying the motherboard unused no LGA 775 motherboard should cost you $60. i'm finalizing a deal for a ROG AM3 motherboard right now for $20. do some more price shopping my friend. no 3+ year old motherboard should ever go for more then $30 used, or $40 new.


$60 is for a new, unused board (not a fan of buying used components thru past experiences). I had a devil of a time trying to find any LGA 775 boards with support for the Core 2 Quad and 4 DDR slots.

I'd thought about it maybe being the PSU instead, but with things spinning up as normal and no post beeps that didn't seems right. Never run into a psu problem before though, so wouldn't know what that looks like. The clicking as thought the hdd is trying to do something is suspicious also... maybe not enough power to the board, then?

Unfortunately, don't have a spare psu to try and can't easily afford to spend on mobo & psu to troubleshoot it. Any other way to narrow down on the culprit? I do have a decent multimeter, if there's a good way to test the psu that way.
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a c 110 V Motherboard
October 31, 2013 11:12:27 AM

mmm... yes... you can test the psu with a multimeter. you need a paperclip.

there will be a green wire running into the big 24pin plug that connects to the motherboard. stick one end of the paperclip into that spot then the other into one of the grounds next to it. your psu will be tricked "on".

Now check the power coming from each of the different color lines (obviously the ground you use won't matter).

Yellow Wires are 12V
Red/Purple Wires are 5V
Orange/Brown Wires are 3.3V
Blue Wires are -12V

Black is obviously a ground

Your psu should tell you how many AMPs of power it will give you at each voltage. make sure it's providing that power as well.
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October 31, 2013 11:56:06 AM

ingtar33 said:
mmm... yes... you can test the psu with a multimeter. you need a paperclip.



Thanks. I'll give that a try this evening and see what happens.


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November 1, 2013 8:41:32 AM

So, it looks like the PSU is shot and I suspect the mobo isn't faring to well either.

Like I said, I'm looking at new (i.e. unused) parts.

The criteria are -
1) ATX, microATX, or mini-ITX LGA 775 board for Intel Core 2 Quad that has 4 slots for DDR2 (unless there's an LGA 775 board that takes DDR3?) and onboard sound. Don't need onboard video. (So far, I'm looking at the ASRock G41C-GS LGA 775 Intel G41 Micro ATX Intel Motherboard on Newegg)

2) a good, stable PSU in the 400-450W range that works with the board.

I don't overclock and rarely play games, so a tweakable bios isn't necessary. This is mostly a home workstation. I know next to nothing about PSU's, so any advice would help.

Any suggestions?
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a c 110 V Motherboard
November 1, 2013 1:27:32 PM

jscalbny said:
So, it looks like the PSU is shot and I suspect the mobo isn't faring to well either.

Like I said, I'm looking at new (i.e. unused) parts.

The criteria are -
1) ATX, microATX, or mini-ITX LGA 775 board for Intel Core 2 Quad that has 4 slots for DDR2 (unless there's an LGA 775 board that takes DDR3?) and onboard sound. Don't need onboard video. (So far, I'm looking at the ASRock G41C-GS LGA 775 Intel G41 Micro ATX Intel Motherboard on Newegg)

2) a good, stable PSU in the 400-450W range that works with the board.

I don't overclock and rarely play games, so a tweakable bios isn't necessary. This is mostly a home workstation. I know next to nothing about PSU's, so any advice would help.

Any suggestions?


Find a used electronics store. There are several here in Phoenix, frankly you can find them anywhere. Electronics recycling would be what i would google for. electronics recycling or computer recyclers. They usually have a little storefront for the working stuff that they get.

If you're lucky you might find a motherboard with a little looking. finding a solid psu for cheap is even easier. Keep your eyes open for a corsair, antec, xfx, pc power and cooling or seasonic psu. Generally you'll get a better unit if you can find one of those. The psu i'm currently using came from one such store, a 400w corsair, got it for $5
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