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Power supply going bad?

post #1 of 22
Thread Starter 
I'm on my phone at the moment and couldn't get the rig builder to work right, so let's start with my specs:

CPU - FX 9370 @ 4.4
Mobo - asus cvf - z
Gpu - gigabyte gtx 560 ti 448 core
Psu - corsair tx750w (almost 5 yr old)
RAM - 2x4gb g skill sniper 1866
Cooling for cpu and mobo is done by xspc kit.

I built this system back in December, and everything has always run fine. Only time it didn't run right was if I had a bad oc or one time it crashed from overheating the vrms during bf4 (before I put it under water, the video card dumps all its heat into the case).

Twice now when the computer was under a decent amount of stress (bf4) I have smelled something come from the case, but it isn't a burning smell. Almost smells like a lawn chemical. Either way, something isn't right. My psu is installed to draw air from the bottom of the case and exhaust out the back, but the smell doesn't come from the psu. It comes out of the exhaust fan on the back of the case. This makes me think that it could be my gpu.

However, would a faulty psu make the gpu run super hot (though I haven't noticed any crazy temps, 80 something is probably the highest I've noticed while gaming)?

My computer keeps freezing up on me now too. While gaming, during boot sometimes, and also after idling (computer isn't set to sleep, just turn monitor off, but the monitor doesn't come back on sometimes). Used to have it overclocked but dialed it back to stock once it started to freeze up. Still happens.

Anybody have any suggestions as to what the problem is?

Tl; Dr - had a weird smell come from pc twice, now it randomly freezes on me at no particular point, just when it feels like it. Is it a bad psu, gpu, mobo? Please provide any input. Thank you.
post #2 of 22
when you say it's back to stock, is that everything? mobo, cpu, gpu and ram, all stock?
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post #3 of 22
Thread Starter 
Yes, minus the ram. I raised that to its rated 1866 speed from the 1600 it was assigned by default. Voltage for either speed is the same when left on auto. Like i said before, everything worked fine until this last week. The reason it's back to stock is because it froze during boot, and reset everything itself. Didn't change anything but the ram speed, which is how i ran the pc for the first month or 2.
post #4 of 22
that type of smell is normally associated with a bad psu

might be worth trying to determine the source

might sound daft, but try running with the case cover off and sniff about and try and find where the smell is strongest
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post #5 of 22
Thread Starter 
I'll try to find the source when I get home. Psu is what I thought to begin with, but it just seems odd to me that the smell comes out of the case exhaust and not the psu exhaust.
post #6 of 22
Thread Starter 
Would the computer freezing while booting or while idle for a while also point to a bad psu? Or would that be a problem with the mobo? Why would my bios settings reset after the pc froze during boot up?
post #7 of 22
Quote:
Originally Posted by Pendy View Post

Would the computer freezing while booting or while idle for a while also point to a bad psu? Or would that be a problem with the mobo? Why would my bios settings reset after the pc froze during boot up?

power issues can manifest themselves in a whole list of weird and wonderful ways, so yeah it could

however, as far as the bios resetting... cmos battery might need replacing or damaged bios

also, if you've OCd too far in the past, there might be damage to the voltage regulators
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post #8 of 22
Thread Starter 
Should be no concern for the vrms being bad. Highest I ever took it was 5 ghz, 1.53v Max. It froze up on me once a while back, my guess is because of overheating protection from 4 hours of 100% gpu heat load from bf4 being dumped into the case and no sufficient airflow hitting the heatsink.

With the sudden freeze ups i don't know that it would be bad bios. Been the same since I've had it.
post #9 of 22
Thread Starter 
I just checked and duplicated the funky smell using Prime 95. I believe that it is heated air from the radiator i have up top in the case. Doesn't seem to come from any other place, and would make sense since it's exhausting air into the case right in front of the rear case fan. Now to solve the random freezes...
post #10 of 22
Thread Starter 
UPDATE: So the smell was not from the radiator. It was actually from the CPU 8 pin connector. It somehow melted the top row of pins on the PSU connector and made it come out of the socket, creating a crappy connection. I am guessing that this is due to a faulty PSU? Now I just need to figure out what to do. Should I take the motherboard out and try to scrape out the melted plastic (looks like I may have to use an exacto knife, but not sure, it's still in my case atm), or send the board into ASUS for RMA? I almost don't want to RMA the board since all I've pretty much heard is horror stories of them saying it's user error and they won't honor their warranty. Also, should I contact Corsair about the power supply? How long do they warranty them for? I've had the PSU since 2008 I believe.

So do I contact Corsair and ASUS and try to get new parts?, or should I try to salvage the mobo and get a new, higher wattage PSU?
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