Please help with troubleshooting this - i ran out of idea

[benzebut]

Hi,

I'm having weird behaviors with my system. It randomly freezes for couple of seconds and unfreeze back. Sound will still play but display and mouse freezes totally. Sometimes, screen will blank and never comes back, but sound still plays fine, in this case, i have to force a restart. It happens very often and in different scenario. While typing this message, it keeps freezing on me, i have nothing open but Chrome (same thing would happens with only IE9). Sometimes, im just listening music while reading ebooks and it would freeze on me also.
Most frustrating is when playing games (SC2 and CIV5) it would freeze but music will play, sometimes i'll lose the display.

Edit, Sorry computer crashed on me, im on a laptop now.

 

[benzebut]

With a fresh format/install of Windows 7 SP1 x64, it does the same thing.
All windows updates done and microsoft security essentials is installed.

here's my specs:
Intel Core i7-860 OCed 3.46ghz
Gigabyte P55-UD3R
G.Skill Ripjaws 4x2gb DDR3 1600mhz CL7
XFX Radeon HD 6870 1GB
Western Digital RE4 6x2TB in RAID5 (For virtal machines)
OCZ Vertex 2 60GB (For OS)
Optiarc DVD burner
6x 120mm Fans
Antec 300

I already tried to run HDTune smart's diagnostic on my SSD without any errors. I already ran builtin extended Windows Memory Diagnostic without any errors. Tried 3 different video cards no difference. I removed everything, cleaned it up, re-did all my cabling, and resocketed the CPU. All my temperatures are fine.

When windows crashes or freezes on me, i see no event at all in the event viewer that could lead me to something. When i experience the freezes period, i can't open task manager...everything goes blank when i try. IT never blue screened me tho.

Please, what am i missing?
thx

 

[dpodblood]

First thing: disable your overclock. Set the CPU back to stock speeds and voltages then report back.

 

[benzebut]

First thing: disable your overclock. Set the CPU back to stock speeds and voltages then report back.

Hi,

Actualy, i've copy/pasted my specs from an earlier post.
CMOS has been cleared prior to all my tests.
The only thing ive set back in the BIOS are
-SATA mode: RAID
-Memory: Loaded the XMP Profile (board only detects 1333mhz CL9 until i load it)

Otherwise everything is factory defaults

 

[dpodblood]

Sounds like an overheating issue. Can you check your CPU and ambient temps?

 

[benzebut]

Sounds like an overheating issue. Can you check your CPU and ambient temps?

In bios, it shows cpu and system around 34c
I use speedfan inside windows 7 to get my temps.
idle its about 34c for everything
when i play sc2, its around 41c for cpu cores and 34c for system
i use scythe's mugen2 with two 120mms to cool it.
i have two front fans to cool HDDs
Top and back fans as exhaust
Side fan to cool system

I really doubt its an overheating issue.
Is there something im doing wrong?

 

[power_hour]

CPU is failing. Buy a new one.

 

[SolMiester]

I have mostly found system freezing and stuttering a memory issue...I would a)- check memory compatibility for the motherboard, and perhaps flash BIOS. I would also check the voltage for the RAM is running at correct settings, and even give it a tweak more voltage..

 

[Steltek]

Since you have more than one memory module, I'd pull all of them except one and see if the machine runs well on one module. If not, continue to swap them out to see if you can find one module that is causing the problem. You can also test using a linux live CD to totally eliminate the Windows installation as the source of the problem (i.e. to verify the problem occurs independent of Windows and thus is a legitimate hardware problem).

I'd also run a session of Memtest86+ and also maybe Prime95 or Orthos for a few hours as well to check the hardware.

 

[DirkGently1]

Crashing with no BSOD makes me think PSU failure.

 

[dpodblood]

Crashing with no BSOD makes me think PSU failure.

If it's not overheating this would be my next guess as well. Then I would look into memory, though bad memory would usually result in a BSOD. Do you have a spare PSU or spare memory you can test with OP?