[Rh3856]

My cpu fan popped off the cpu a few weeks ago and my PC shut off after the cpu overheated. I continued to turn it on until it overheated and shut off about 10 times or so until i used Coretemp to check and see that it was overheating to 105 degrees. At this point i got some new thermal paste and got the temp down to about 40. Since then however, my pc shuts down after being on for about 20 minutes and doesnt turn on for about 10 minutes and sometimes also until i unplug and plug the power cord back in. Cpu temp remains at 40 I have removed each ram stick and even bought a new case/ power supply yet it still happens. What do you think? CPU damage?

Core I3 3.06 ghz (not overclocked) w/ oem fan
Gigabyte h55n-usb3
Apex mi-100 250w + 80mm case fan
G.skill ripjaws 4gb (2x2) ddr3 1600
2X 2tb WD20EARS

 

[DaChozenOnez]

im not a expert but...using the computer without a cooler could have melted or burnt the cpus insides...

 

[Doby]

Most psu that come with the case are junk this could be the problem what psu is it?

 

[Rh3856]

The psu is Allied al-8250sfx. The previous psu/case was different so im surprised its happening on both.

 

[Doby]

the psu is very low quality add to that its way to small for the system, you need a good quality psu such as corsair or seasonic.
What video card are you using?

 

[Rh3856]

Oddly, the old psu was 150w and worked for about 3 months before I had the cpu-overheating issues. This psu is new and at 250w. I am using the core I3 integrated graphics. So no graphics card.

 

[Tyree]

Allied PSU's are junk and 250W is not sufficient.
Do you intend to add a dedicated GPU in the future?

 

[Doby]

http://www.techsupportforum.com/forums/f210/power-supply-information-and-selection-192217.html

Read the above link and choose a recommended psu from the standard computer class.
If you continue to run these low quality and undersized psu's you are going to blow something if you have not already

 

[Rh3856]

Ok im going to get a larger psu then. I may one day add a gpu when i get a 3dtv. How many watts woukd you recommend and alsois there anyway to tell if ive blown something already?

 

[Tyree]

We would need to know what specific GPU you intend to purchase but these two will cover most.

XFX Core Edition PRO650W $96: Newegg.com - XFX Core Edition PRO650W (P1-650S-CAB9) 650W ATX12V v2.2 & ESP12V v2.91 SLI Certified CrossFire Ready 80 PLUS BRONZE Certified Active PFC Power Supply

CORSAIR Enthusiast Series TX650 V2 650W $100: Newegg.com - CORSAIR Enthusiast Series TX650 V2 650W ATX12V v2.31/ EPS12V v2.92 80 PLUS BRONZE Certified Active PFC High Performance Power Supply

 

[Rh3856]

Alright just added a CORSAIR CMPSU-550VX 550W ATX12V V2.2 SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply. Unfortunately the problem is the same. turns on for about 10 minutes and then turns off for randomly and doesn't turn on for about 10 minutes. I feel like the fact that it doesn't turn back on for a while is heating. Yet the temp reads in the high 30's and low 40's every time. Do you think my processor is done? Or am I missing some sort of simple solution. Could it be a hard drive issue?

 

[Doby]

Clean and redo the thermal paste any way, inspect the cpu for any sign of a bluish tint.
remove all drives and cards except video, start it up enter bios, let it idle in there and keep a eye on the temps and voltages and post them here.

Note how long in bios before the shutdown if at all

 

[LogicPlacebo]

I built a Core i3 550 based system and am experiencing the same problem --- computer will shut down during gaming, and will not turn on for several minutes. I have to unplug the system and let it sit for awhile.

Switched out PSUs, case. Using the internal graphics of the i3. As far as I can tell, the CPU is not overheating (idles at 18 celcius). I am really scratching my head on this one.. Maybe it has to do with the internal graphics? I was going to try a discrete graphics card..

 

[LogicPlacebo]

I think I've solved this --- it had to do with the motherboard chipset overheating. I was at my wits end, and the heatsink on the motherboard for the north bridge was somewhat weak; it had a shroud over the top of it, that while looked nice, was blocking the cooling potential. So I took the heatsink off, cleaned the gunk off it and the chip, put on some arctic silver 5, removed the shroud.

I had the PC running a game for 2+ hours and didn't shut down once..