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Is my PSU or my Mobo broken?

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lautaro13

Registered
Joined
Feb 12, 2012
Hello OFC, its me again, hope i dont start to annoy you (if so, sorry) ill try to sum it up for you guys.

This was my previous rig:

Intel Dual Core e5400 2.7ghz
XFX HD4850 512mb gddr3
Biostar g31d Mobo
2GB Kingston Ram DDR2 800mhz
450w PSU with two +12v lines, one with 16a and another with 14a
Two SATA Western Digital Caviar Blue 500gb
One IDE Western Digital 80gb
One DVD Writer

And with this combination running for over a year of heavy use in all terms, including gaming i never, ever, had any complications at all.

NOW.
Three days ago i bought the following:
AMD FX 4100 3.6ghz
Asus m5a78l-mlx
4gb Kingston RAM DDR3 1333mhz CL9


Thing is, i installed the CPU and did the swap properly of the parts (mobo, cpu and ram) to my other rig and everything turns on and works...
(no thermal compound, yet, tho, i was going to add it but since what happened, ill wait, but anyway, there's no temperature problems at all, cpu remains below 45ºc and gpu below 60ºc, its -0ºc over here)

Now, the first time i booted up to see if i didnt screw anything, i only plugged the mobo, cpu, ram and nothing else, no gpu, no hard drive, no dvd reader, didnt even conected the frontal usb and audio, and i proceded to boot up from a Live Ubuntu via USB, and, i noticed two things:

1. the PSU starts doing this weird frequency noise -that some people told me is a Coil Whine, not sure if thats it what im getting here but well...- when the OS loads, its constant and it changes its volume a little bit from time to time.
I have no idea why, it gets specially higher (not "omfg shut that thing down" high at all, but its annoying, specially since the case its right next to my ear) when i move the mouse drawing with the selection or i use an application, like a game and such.

And 2. the Audio didnt worked, even tho my old rig had the same onboard sound card, and it worked perfectly when i ran it plug and play in any linux.

I just took for granted that was normal and the audio could be solved in Windows, even tho its a shame since im a big Linux user.

So i proceded to connect one hdd and the dvd reader and installed windows x64 (also tried x86 later, same results), after the installation, the coil whine was gone but i did noticed that the onboard audio wasnt working with the plug and play drivers either and same with the LAN driver, so i proceded to install them, rebooted and two new things happened, audio and lan were working but the same "coil whine" or whatever its called started to happen again, and a little while longer the sound board begun with something else:
The Realtek CP was constantly spamming the "new device plugged" and instantly unplugging it, and so, and so, in a repeated loop.

Leaving me to unplug the speakers to stop it, i tried with speakers and even a mic in all three of the plug spots (green, blue and red) to see if it was only the green one, but no, it just kept on doing it.

The coil whine sometimes it stops its constant sound, only doing short bursts now and then depending on what i do, and resumes whenever he pleases, but its always there.

Audio its pretty much useless...

I did connected my 4850 later on to see if my PSU was the trouble and everything went well, no bsod or resets, played a few games i had on my hard drive such as MW3 for a while, and a few other games (Mass Effect 3, Stalker Syndicate, STALKER Call of Pripyat, Dead Island, Star Wars Force Unleashed, Dead Space 2, everything maxed out, no problem) without any trouble except the coil whine, and, obviously, no sound...

So i just freaked out and did a fast swap of hardware to my old Intel rig to see if my psu was definitively going to die and no, the PSU remained quiet, did a swap again to the new FX rig, again, without the 4850 on it, did the same as before having the same results: sound card freaking out, so basically no audio and the coil whine.

So Here are my questions:
Is my PSU broken or something?
How comes a more power loaded rig gets no coil whine but a lighter rig does?
Is the new motherboard broken? should i RMA it?
Could it be that the PSU broke the Motherboard?


Imma try to get a dedicated sound card tomorrow to see if this fixes it, but if i dont get one ill just get it to the store and show em, and ask them to fix it or change it for a new one, it surprises me cause its a brand new mobo, processor and ram and except for this things, everything works fine.

I know my current PSU is not good for the FX and 4850, and im planning on changing it for a brand new one soon, but ive been told this PSU can hold up for a while...

Here i recorded a few vids so you can see what i mean, heres the old rig when i plugged it in back to check if the PSU was broken, no coil whine whatsoever coming from it, everything was working perfectly, just like before the swap to the new rig.
http://www.putlocker.com/file/B9752A3593420A40

Here i swapped to the new rig and tried the live ubuntu getting the coil whine, and no sound:
http://www.putlocker.com/file/E3A6ADA6CF550DB3

and here i installed windows 7 x64, no coil whine, sound or internet, then i installed the drivers and the coil whine returned and the audio CP started to flip out.
Here you can see what the Realtek CP does first hand:
http://www.putlocker.com/file/2FB591AA71EF0EDC

Hope you can help me out, thanks beforehand for your words, sorry of it was too much :blah::blah::blah::blah::blah:

big hug, thanks for reading.

PS: Heres a recording before i did the swap to my old rig to check on my mobo, just in case you cant hear the coil whine on the previous videos, you can in this one:
http://www.putlocker.com/file/62BB20BD6DFB413B
 
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didn't watch your videos but i would guess your power supply is on its way out,if you have the means to try a different one in there i would give it a shot.what brand psu is it?
 
I thought about it but the sound doesnt follow the psu. If i switch it in another rig, with heavier power load, it doesnt make any noise, as i said...

Its a bangho psu, im planning on changing it anyway, thats why im asking if its my psu or my mobo...

this sound trouble its really weird.
 
Do you have a multimeter you could use to check voltages with? If so fire the PSU up (in any system) and check a Molex's yellow wire, it should be 12v or so. The red wire should be 5v or so.

It sounds like it follows the new motherboard, so motherboard is my guess. The multimeter will help narrow things down.
 
Do you have a multimeter you could use to check voltages with? If so fire the PSU up (in any system) and check a Molex's yellow wire, it should be 12v or so. The red wire should be 5v or so.

It sounds like it follows the new motherboard, so motherboard is my guess. The multimeter will help narrow things down.

I can see if theres one at work that i could bring home, but if i dont find one, since this psu in a more power demanding rig works like a charm that could pretty much narrow things down... its weird, maybe the new processor or mobo has a different frequency that makes coil in the psu vibrate... or something...
 
Ok so i just found something out, the coil whine can be changed when i switch the power plan to the highest performance and dissapears if i choose balanced or economy, i guess is based on the cpu load, since in the power plan you can change the percentage of cpu usage.
 
What does?

This is what im talking about.
http://k37.kn3.net/22D6A4E3E.jpg

You say its the motherboard? how do i confirm or explain that to the tech people at the store (they are most likely even more ignorant than i am so i would really have to be there with a good explanation)
 
Try now.

BTW i have a tester, just tell me how to measure it, i just plug em into the black and yellow wires of a 4pin molex with the system running?
 

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Yup.
The black goes to black.
The red tester wire you use to check the yellow Molex and the red Molex.
 
Ok, ill try it when i get back. Does any of those images tell you anything wrong with the PSU?
 
From what i heard BIOS read is quite precise...

so, ill try the tester thing now, i just grab any 4 pin molex (with the computer turned off or running?) and plug the black wire into any of the two black pins and the red one in either the yellow or red?

plug it right thru it? where do i touch with the tip of the metal thingy?
 
Computer running.
Touch the metal tip of the probe to the metal socket inside the molex.

EDIT:
Make very sure the meter is set to volts, not amps.
 
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