PSU can't start

D

dasos

New Member
Suddenly I have a funny/strange problem.

I recently got GA-970A-UD3 mobo. After a couple of days I pressed the "sleep" key in my keyboard and problem started. PSU can't start. It has 2 green indicator leds, when u start pc suppose that both get green, but the 2nd led won't get green. It tries, but remains red. Like something makes a short circuit.

I connected this mobo to another psu (same exactly) from another system which works normaly. Didn't start, too.
The only way to start is to disconnect the power 2-3 times. Restart works. But if I shut down and then start, it wont start.

Do u think that PSU is the problem?
 
Well if you tested the PSU in a completely different 'working' system and you still have the same problem, then it looks like a problem with a PSU.

I'm not sure what is the problem however, you will have to wait for the more knowledgeable members to help you with that :P
 
dasos said:
Suddenly I have a funny/strange problem.

I recently got GA-970A-UD3 mobo. After a couple of days I pressed the "sleep" key in my keyboard and problem started. PSU can't start. It has 2 green indicator leds, when u start pc suppose that both get green, but the 2nd led won't get green. It tries, but remains red. Like something makes a short circuit.
Click to expand...

Try the PSU in a different PC, or Try a different PSU in your PC.

dasos said:
I connected this mobo to another psu (same exactly) from another system which works normaly. Didn't start, too.
The only way to start is to disconnect the power 2-3 times. Restart works. But if I shut down and then start, it wont start.
Click to expand...

This is where i'm confused. You put your MoBo in a diffident PC?

dasos said:
Do u think that PSU is the problem?
Click to expand...

So I take it you don't know if it's the PSU, or the MoBo?
 
dasos said:
I connected this mobo to another psu (same exactly) from another system which works normaly. Didn't start, too.
Click to expand...

tech savvy said:
Try the PSU in a different PC, or Try a different PSU in your PC.



This is where i'm confused. You put your MoBo in a diffident PC?
Click to expand...

He just said he tried another power supply.



dasos said:
So I take it you don't know if it's the PSU, or the MoBo?
Click to expand...

If he (knew) it was the power supply or motherboard. Why would he even be here asking?

dasos. Put the power supply back in. With it unplugged, reset the bios then press the case power button a few times to discharge it. Plug it back up and see if it boots normal.
 
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StrangleHold said:
He just said he tried another power supply.





If he (knew) it was the power supply or motherboard. Why would he even be here asking?
Click to expand...

Are you even reading what he wrote?

Edit: He stated that it is his PSU, but then went off and said it's he's MoBo. What I was saying was to try a different PSU in HIS rig to eliminate either the PSU or MoBo as the problem.

If it's the MoBo, then I suggest what you said in the resetting of the BIOS. I don't believe his MoBo has a reset switch or button, so he'l have to pull the on-board battery out for a few seconds.
 
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He never said it was his power supply. He never said it was his motherboard.

He asked if we thought it was his power supply!

He said he tried another power supply.

Said he just got the motherboard, but never asked if that was what it was.


So none of your questions went anywhere or really helped at all! And yes the motherboard has a reset/clear bios jumper. Same board as I have.
 
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StrangleHold said:
He never said it was his power supply. He never said it was his motherboard.

He asked if we thought it was his power supply!

He said he tried another power supply.

Said he just got the motherboard, but never asked if that was what it was.


So none of your questions went anywhere or really helped at all! And yes the motherboard has a reset/clear bios jumper. Same board as I have.
Click to expand...

Neither your last two post, but w/e.

My first post was to clarify what I just read. Because it really wasn't understandable.
 
Well boys...theres no need to have argument:)

My psu (Silverstone Nightjar 450W fanless) seems to be ok.
I connected psu to another board with low consumption (Sempron140, ddr2x2, ssd) and worked.
I connected my current system(PhenomII 960T, 9800gt green) to another psu(again Silverstone 450W, I have two of them) and did'nt work.

So... seems thats theres an issue with mobo(Gigabyte GA 970A UD3).
Maybe needs more power than 450W?
Each time I press start, the psu's led gets green only instantly but remains red. So system can't start. I can start once only if I disconnect power, one or more times.
 
dasos said:
Well boys...theres no need to have argument:)

My psu (Silverstone Nightjar 450W fanless) seems to be ok.
I connected psu to another board with low consumption (Sempron140, ddr2x2, ssd) and worked.
I connected my current system(PhenomII 960T, 9800gt green) to another psu(again Silverstone 450W, I have two of them) and did'nt work.

So... seems thats theres an issue with mobo(Gigabyte GA 970A UD3).
Maybe needs more power than 450W?
Each time I press start, the psu's led gets green only instantly but remains red. So system can't start. I can start once only if I disconnect power, one or more times.
Click to expand...

That 450w Silverstone should run your rig with ease. It's differently your MoBo. Try resetting your BIOS, and see if it helps.
 
dasos said:
Well boys...theres no need to have argument:)

My psu (Silverstone Nightjar 450W fanless) seems to be ok.
I connected psu to another board with low consumption (Sempron140, ddr2x2, ssd) and worked.
I connected my current system(PhenomII 960T, 9800gt green) to another psu(again Silverstone 450W, I have two of them) and did'nt work.

So... seems thats theres an issue with mobo(Gigabyte GA 970A UD3).
Maybe needs more power than 450W?
Each time I press start, the psu's led gets green only instantly but remains red. So system can't start. I can start once only if I disconnect power, one or more times.
Click to expand...

Have you tried resetting the bios on the board?
 
tech savvy said:
That 450w Silverstone should run your rig with ease. It's differently your MoBo. Try resetting your BIOS, and see if it helps.
Click to expand...
StrangleHold said:
Have you tried resetting the bios on the board?
Click to expand...

I made cmos many times.

There is a newegg post

"The 8 pin power point was not compatible so I had to buy a new power supply. Minimum is 500 watts so I went 750. Read all the specs prior to buying"

Does this mean that this mobo requires a 500W or more psu to work?

Heres a video of the problem(13''). Shows what happens when I press start. The second led blinks from orange to green in each press. Restart works normally.

http://www.youtube.com/watch?v=NH29mtSdRsM
 
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The reason, a motherboard its self takes very little power. The hardware hooked up to it is what determines what size a power suppy is needed. To fire its chipsets up is like 25/30W at the upperend. Then you have like the onboard USB/Fire/LAN chipsets, they only pull a few more watts. Cant really add onboard video chipset to that anymore because most modern CPUs have the onboard video on the CPU. The point is, it takes very little Wattage/Amps to fire up the board itself.
 
StrangleHold said:
The reason, a motherboard its self takes very little power. The hardware hooked up to it is what determines what size a power suppy is needed. To fire its chipsets up is like 25/30W at the upperend. Then you have like the onboard USB/Fire/LAN chipsets, they only pull a few more watts. Cant really add onboard video chipset to that anymore because most modern CPUs have the onboard video on the CPU. The point is, it takes very little Wattage/Amps to fire up the board itself.
Click to expand...

You are not well informed. This mobo needs a minimum of 500W no matter what devices you connect. It is written in the manual. Thats why my 450W psu was not able to start(only after switch off).
 
No man, I'm not well informed. Just been doing this for 18 years, pretty much a noob.:rolleyes:.

You do realize I have the same board and probably installed more then 10 of them in builds.
 
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