Hot i5 760

I removed the cpu cooler again, this is how it looked:

http://i42.tinypic.com/2w3xqqg.jpg
http://i40.tinypic.com/2rqghtx.jpg

Is this okay?

i'm not sure 80 degrees is too hot, i think it is not the cause of the shutdown. can you give more specs about the system Graphics card, Power Supply?

well i always add more thermal paste than what you've added but that should be enough, but you can try removing it and see if it covered all the cpu area. if don't just add a little more.

also your cooler is not any super cooler, the cooling performance is not much superior than stock cooler, this is recommended for who have a compact case and want a silent solution.

you could try using another cooler if this is really the problem but would be nice to know what is your PSU and graphics card before changing it

EDIT: by latest pictures it should be ok just try reaching the full cpu area with thermal paste (add a little more to the missing area, but i don't think this is giving you the high temps.

I'm using the 450W PSU that came with the Silverstone GS05 case, this one: http://www.silverstonetek.com/product.php?pid=253&area=...

My graphics card is a Palit Geforce GTX 460 Sonic

Well your psu should be enough for the system (without overclocks).

Well while you are under TJMax you should eb ok lot of peoples on the internet are running it a 75 celsius and 80 celsius without problems.

for now try not stressing the cpu since it will not normally get to those temps if you start to get shutdowns at normal use you may need to change to another cpu cooler.

but this is really strange turning off at 72 celsius, maybe your motherboard have a safety profile that is doing that? just imagining...

assuming it is the cpu cooler, what would be a better alternative that fits inside the Silverstone GS05 and the Gigabyte GA-H55N?

I noticed another quite high temperature: http://i44.tinypic.com/1zox37t.png (after stress testing for 2 minutes) the cores are already cooled down (new thermal paste job seems to yield better idle temps!)
I think this is the chipset (?) on the mainboard. See this picture: http://i43.tinypic.com/1zqfvdi.png

I could hold my finger on it for quite some time, but it sure was getting hot!

36A on the 12v+ should be enough to run the video card

It might just be poor case airflow?

http://www.tomshardware.com/reviews/cooling-airflow-hea...

http://www.tomshardware.com/reviews/cooling-air-pressur...

I mean, something as simple as having a fan blowing the wrong direction can cause problems.

Yeah but the components are not even in the case right now...

Is the fan blowing air down to the cpu? Maybe try turning the fan around if not?

The fan is blowing down to the cpu (sucking air from above)

like he said it is at 80 degress i don't think it is normal to a computer turn off only at 80 celsius on a cpu, check if anything else if overheating, i would say that your psu was droping the computer when the CPu used full power, but since you have a silverstone and also by the factor that you need to wait before turning on i think your cpu is really overheating or your motherboard maybe is configured to only work at low temps.

Are you measuring your temps how? if you try to use Real temp you can check the TJMax it is the temperature that normally will cause the cpu to turn off, but 80 degress is not too hot for that strange behavior.

Intel does specify the Tcase at 72.7 °C. Not sure what that means though  

Anyway, I'm not able to access the bios because the onboard vga/dvi ports do not seem to work (even after a bios reset). Having some issues with the GTX 460 too, when I plug the 6-pin pci express connector in front-most socket, the system turns on for half a second and then shuts back down. If I only use the other 6-pin socket it does boot and the fan of the GTX 460 is spinning, but still no video output  

I don't know too much about the i5-760 but that temp does seem really alot for any cpu. I looked that your thermal paste footprint on your cooler/cpu. I would recomend reapplying it and making sure it covers the entire cpu. I prefer the method where you take a creadit card like object and smear a small amount of thermal paste (less than 1mm) across the entire cpu evenly then drop the cooler over it.

I do this for my systems and I get about 1-2c cooler than doing a bebee in the center and having the pressure of the cooler spread it out.

Just to make sure, and I don't think anyone asked this priorly, but are you overclocking your system at all?

Even if not, please post your voltages.

Just my observations.

First, that picture of your CPU paste doesnt look like a good contact. And it doesnt look like it is your paste amount, it looks like your cpu has a high spot or your tension on your mount isnt enough. I would start there first, your heat sink needs to make a more full contact with the cpu. Quite frankly if you are having trouble with this, go back to your stock heat sink to verify this part of the issue. The stock heat sink should be able to keep it at less than 65 degrees with mild overclock. If you are hitting 80 degrees, something is off, either your air flow, ambient temperature, or heatsink mount. By the way, put paste on your cpu, then spread with finger in ziplock bag or equivalent, then mount your HS.

Second, if you are overclocking your GPU/CPU or both (which by god you should, both of yours do it well), then 36A is NOT enough for this. And my bet is your power supply is not sufficient if you are overclocking. You are likely running at the top end of what that power supply will supply for long periods of time. As a rule only use up to 80% of your PSU maximum power for long periods of time, what will happen is your system will instantly turn off (or blue screen because it is undervolting) and will take a little while to turn back on (because the PSU has to cool down before it will turn on again). My money is on this being your problem, but removing your overclocking should allow this PSU to handle the job. Power demand greatly increases on these bad boys as they overclock. Personally I wouldnt use less than a 40A PSU on this build. But based on your system build, you might not be overclocking, which makes a sad panda.

Good luck and let us know how you fare.

I did not do any overclocking.

The core voltage varies between 0.88V idle and 1.248V under load (prime95 blend test)
see: http://cdn.overclock.net/d/da/daf35dcd_zlxa80.png

I will try the stock cooler as soon as I can and will post the results.
Any clue on the seemingly dead gpu?

you should connect both pci-e pins to the graphics card work o.o, you should never connect it without the two power pins plugged.

Yeah well when I have both connected and I press the power button, the LED's on the mainboard turn on for like 0,2 seconds and the fan of the psu starts to spin but immediately after that the whole thing shuts down and won't start again after I unplugged the psu.

I only took the gpu out and did some dust cleaning with compressed air while making sure that I didn't touch the pcb and holding the fan so it wouldn't spin while cleaning. It's hard to believe that that killed the gpu, I know it's possible but still...

Anyway i'm now able to run prime95 for an hour with a temperature of about ~70 °C (18 °C room temp I would say. Still only able to access the system trough remote-desktop  

i think maybe you are having issues with your psu, if you are able to test with a more powefull psu would be nice, i think that it is not handling the power used by the gpu and is turning of the computer, you should really check that psu out. maybe that is what happens when the cpu was wasting too much power, the psu could not handle and turned off.

this is strange since your psu is not that bad, but worth checking out.

you could buy a good psu for your computer like this one, and replace your old one:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

this psu may handle all your desktop well for a long time;

The thing is that I have this system for over a year now. The temps never where great and I did experienced shutdown's when stress testing. But those where definitely because of high temperatures (over 90). I always thought it was just a bad thermal paste job. I never really had the time to take everything apart (mini itx are hell-of-a builds man  ) and redo it.

It was doing it's tasks just fine (I could even play the latest games on it with quite high settings) until recently it started to fail and I finally made the decision to figure out what is wrong with it (I know I should have done this right away...)
So it's hard for me to believe the psu is failing because earlier it could handle the gpu and cpu just fine.

Maybe the heatpipes/heatsink have gotten a bit loose so they're not transferring the heat properly. Does the base of it look okay, and can you move any of the pipes and sink at all?

Is the psu you recommended FSX form factor compatible? It has to fit into a mini-itx case  

I wish I had a spare PSU, I guess I would have to go and yank one out of a perfectly fine computer then   But that seems to be the only way of telling if the gpu or psu is falling

Okay trying now with this psu: http://www.coolermaster.com/product.php?product_id=4196

Same result, when the far most pci-e connector is connected the system won't start. I guess that would mean the gpu really is dead?  

It even does that when the gpu is not connected to the mainboard, just with the one 6 pin power connector in the 'bugged' socket on the gpu..

Offtopic: why am I not allowed to edit my own posts? (Excuse me but i'm new to these forums   )

the correct way is connect the gpu to the motherboard and plug ALL OF 6pins not doing that may result in dead video card, if you don't plug them all you may burn your video card, if with another psu the problem persists (with both pci-e plugged) maybe your video card is dead, best solution to be sure is trying your gpu in another desktop (if possible not Mini) with enough psu.

if the graphics work there than it can be a motherboard problem.

offtopic: to edit your posts there is a small paper and pen button under your post it works here.

I tried the video card in an other desktop (the one with the 500W psu) and it does exactly the same thing, psu fan turns for like half a second and shuts back off.

I always used both of the pci-e power connectors, only after it wouldn't boot I went experimenting with just one of them in either socket. Meh I guess it really is dead then?      

offtopic: I do get to edit the message but when I try to post it it says: "You are not allowed to edit this message!"

yes you should try with another graphics card, normally when graphics card die they just don't display nothing, it looks like it is also in short circuit or something to make the psu to turn off, if you haven't tested on another psu i would still say it is the psu, but be aware that your psu may have done that to the gpu, so when buying another try not to overpower your psu, or it may happen the same problem.

I tried another psu: same thing happened
I tried the graphics card in another dekstop: same thing happened

By overpowering the psu you mean do not overclock the i5 760 and the gtx 460? Because I never did that.

like i said probably this graphics card is with problem, you will need a replacement, by overpowering i said, don't go for a 570/6950 or you will burn them too with that psu, and overclocking is also included, don't overclock any component.