motherboard or cpu or both dead

buggydumpster · Dec 27, 2013

My computer last night crashed. I went to turn it on and nothing happened. my two gpu, psu, and case fans were spinning. my cpu fan was not. I don't have a speaker for the motherboard so I can't check beeps. When i turned it on nothing happened. the hard drive spins up, everything but the cpu fan starts and after turning it on I cannot turn it off using the power button. holding it down does nothing either. Any advice where to go from there?

dextermat · Dec 27, 2013

+1 PSU

buggydumpster · Dec 27, 2013

I can't find another psu that is powerful enough to support it all. Could i do it with one gpu at a time and use a 550 watt?

lookerup · Dec 27, 2013

Test your psu with a paperclip(without the paint).
Also check for burning smell.
Take all ram out and test each individually on each slot.
Motherboard and CPU problems are usually indistinguishable, but usually the motherboard is at fault.

buggydumpster · Dec 27, 2013

I checked it out, apparently one of the 4 pin for the power supply melted into the motherboard. So I am going to guess that I have to replace the cpu and motherboard. thanks for the advice.

smeezekitty · Dec 27, 2013

Wow that's strange. What is your PSU?
Sounds like both the PSU and motherboard will need to be changed

buggydumpster · Dec 27, 2013

Thermaltek 850. It was powerful enough to run everything, Im just a little surprised it blew like that so I was not thinking of it melting.

lookerup · Dec 27, 2013

i think it melted because it was too powerful.

buggydumpster · Dec 27, 2013

i don't think so. I was running two xfx r9 270x with 8 gigs of ram. anything under that and I would have had power issues. Unless my calculations were off i thought it was just powerful enough.

smeezekitty · Dec 27, 2013

Do you mean thermaltake? or is it really thermaltek?

lookerup · Dec 27, 2013

think he meant thermaltake

buggydumpster · Dec 27, 2013

smeezekitty :

Thermaltake, my bad. I am really tired.

nostall · Dec 27, 2013

Had a similar problem on an ASUS M2N32SLI Deluxe board and a PC Power&Cooling 750Watt Silencer.
Replace the PSU first.
Good chance there was a spike in voltage/amps that fried the 4 pin connector: I am assuming you mean the 4 pin EATX Aux. power connector for the CPU.
If you are lucky, you will be able to clean the metal pin on the mobo connector and the new psu will start you PC.

Just a note, for me that was the second time that my PCPC had failed, the first was much more expensive. PCPC repaired the unit again, and I put it into my son's pc (non-gamer for the most part) and it has run great for ~3 years.
I didn't trust it enough for my primary gaming/work rig, so went with Corsair.
Thermaltake should honor their warranty if the unit is new enough (not out of warranty), then you must decide if you want to use it again or not. What model etc. is your Thermal Take PSU?

buggydumpster · Dec 27, 2013

nostall :

It was the smart m850w. I called them to see if they would help but no reply yet.Sorry to hear it happened to ya, it has not been a fun time so I imagine you felt the same way. How did you go about cleaning it up? the plastic is pretty melted in there.
Thanks again for all of the help this morning everyone.

smeezekitty · Dec 27, 2013

One possibility is the connector was not in all the way or defective causing a high resistance connection which leads to large amounts of heat.

buggydumpster · Dec 27, 2013

smeezekitty :

that makes a lot of sense. It might have been bumped around while I was moving it during Christmas or it was just bound to happen. Thanks for everyone replying quickly.

nostall · Dec 27, 2013

buggydumpster :

Let us know what happens, what you do. I forgot about possible 'partial disconnection/unplugging', but that could happen.

buggydumpster · Dec 27, 2013

nostall :

buggydumpster :

Let us know what happens, what you do. I forgot about possible 'partial disconnection/unplugging', but that could happen.

Will do. It might be a few days but ill reply once I get things in order.

nostall · Dec 27, 2013

buggydumpster :

Well, I lucked out and didn't have but a very small amount of melted material, but the metal connection pins were scorched black. I cleaned it as best of possible using (as a scraper) a small flat-tip screwdriver, a thin/small blade on a pocket knife, and emory cloth or sand paper wrapped around a screw driver (I think the phillips head screwdriver worked easiest). Because of the small area in which you have to work, it was difficult to clean very well; once i had some metal shining on the pins and the debris scraped off as well as possible, and then blown out with canned air, I reconnected a good psu and everything finally booted. The short version of the whole troubleshooting effort is that on the suggestion of ASUS tech support we were going to try to boot the system with JUST the CPU and when I pulled the 4-pin wire the problem was evident.

motherboard or cpu or both dead

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