Random Computer Freeze :(

[squallypie]

Hi,

I'm running a new PC custom built by a local computer store. The specs are as following:

Intel 2600K i7
Asus P7Z68 V LE MoBo
Sapphire 6870 1GB
Cooler Master 750W PSU
8GB Patriot
2GB Seagate and 1GB Samsung

The problem is: Computer freezes RANDOMLY.
What happens: Music stops playing, keyboard and mouse stop responding, all processes freeze but the screen is still there totally FROZEN. No BSOD or Restart.
How i'm fixing it: Force shutdown by pressing on the power button and restarting it again.
Does it happen all the time?: Yes
When: It happens from anywhere between 5 minutes after start up to a few hours. Very luckily one day, it lasted for 28 hours after start up once. i thought the problem was over but it freezed again.
Random Observations: A temperature labelled as "CPU" on speedfan shows 80*C when idle and it reduces to 40*C when the cpu is under load. Very strange as temperature is usually supposed to RISE when under load. But the core temperatures are in the typical values. I dont know what the "CPU" label actually refers to.. a friend suggested that the motherboard might be overheating but the System temperature is at 30s. Also, the computer freezes even when "CPU" temperature is low. So any connection between the CPU temp and freezes are ruled out.. But still it is strange.

A little about the components:

The graphics card and PSU were transferred from an old PC to this new PC. They worked very well in the old PC so i dont think they are the problem.

I ran memtest for an hour and the tests were all okay. So RAM cant be blamed as well.

Seagate has a hard disk diagnostic tool which i ran on both my hard disks and both passed all the tests.

I dont think anything can go wrong with a processor but i might be wrong.

I think its something to do with the motherboard as that is the main component in providing all the outputs. Only the video goes out from graphics card, but even the card is on the mobo..

Any ideas? its VERY irritating that this new PC isnt as stable as my 3 year old PC.

I sent the computer back to the shop which made it for me but they sent it back saying they ran all benchmarks and everything was fine. I'm planning to send it back again.

Thanks alot!

PS: The processors handle Prime95 very well. It lasted 12 hours at 80-84*C until the computer just froze for no reason, like it does always. This screwed torture test.

 

[Kenmitch]

Is the PC over locked or stock speeds?

 

[Puppies04]

Please limit this to one post. You already have the exact same one in CPUs and overclocking

 

[squallypie]

@Puppies04 very sorry for that. i couldnt figure where to post so i posted at two places.
@Kenmitch its at stock speeds. havent touched the frequencies YET

 

[SomeGuyInAR]

Wow, I had almost the exact same system and problem:

My system:
Gigabyte P67A-UD4
Intel Core i7-2600k (at stock speeds at the time)
2x4GB Corsair XMS DDR3
Sapphire Radeon HD 6870 (at stock speeds)
WD 1TB Caviar Black

Same issue too--periodically the system would freeze up. No blue screens or any visual distortion--just a sudden and complete lockup. It was not necessarily at times when under a heavy load, but it seemed to happen more often when I was playing mp3s and Nexuiz.

--

I *think* I have fixed the problem by accident. In the process of overclocking the processor, I realized the "auto" detection on the motherboard had incorrect settings for the RAM. Corrected them per Corsair's specs and no complaints since.

So, my advice is to check your memory settings in the bios and make sure all is well there.

 

[squallypie]

@SomeguyInAR Thanks alot for replying bro! i'll try and post back

 

[poohbear]

sounds like a RAM issue to me, so many times when i didnt know what was causing an issue i would manually set my RAM timings to the loosest possible and the problem would disappear.